My Two Cents:

Step 3 of the Combat Flowchart:

3. "Modify Attack Dice" step

- These abilities including adding, changing and rerolling dice results. Dice can be modified multiple times, but each die can be rerolled only once.

i. Defender resolves abilities that modify attack dice

ii. Attacker resolves abilities that modify attack dice

I would argue that a ship attacking another ship (the defender) with HSCP equipped is, in Step 3 part i, being forced by the defender to modify their attack dice by spending their focus token at that time. I say this because HSCP is causing the spending of the focus token and the dice modification and HSCP is equipped to the defender which makes it the defender's ability to resolve. After the Defender's HSCP dice modification ability resolves and forces the attacker to spend their focus token to modify their attack dice it is now the attacker's time to resolve their abilities. At this time they may activate Accuracy Corrector if they choose.

Due to timing windows, and accepting that HSCP is a dice modification ability associated with the ship it is equipped to, the attacker never has the opportunity to trigger Accuracy Corrector before HSCP forces him/her to spend their focus token.

I absolutely, 100% disagree with your assessment that HSCP equipped to the defender has the attacker spend a focus token during step 3 i.

HSCP is not an ability that the defender resolves

• HSCP doesn't say: "When defending, you may force the attacker to spend a focus token."
• HSCP says: "When defending, the attacker must spend 1 focus token if able."

And the rules state that the attacker can spend tokens to modify dice during step 3 ii and there is nothing on the card that says to break this rule.

Due to timing windows, and accepting that HSCP is a dice modification ability associated with the ship it is equipped to, the attacker never has the opportunity to trigger Accuracy Corrector before HSCP forces him/her to spend their focus token.

HSCP doesn't mention anything about modifying dice, it also doesn't provide an effect that enables a focus token to modify dice so it can't be a source of modification.

It also does not restrict a ship to performing a modification with a focus token or does it require that a focus token be spent during a modify dice step. Kanan pilot can spend a focus before any dice are rolled for an effect that is not modifying dice. This satisfies the requirement of HSCP to spend a token during the attack.

This only means that OL is affected by the HSCP.

Accuracy Corrector case is still open.

That is because: HSCP tells you to spend your token, you have to spend it to modify your dice or use another ability (like Kanan pilot). Forcing to spend is not yet forcing to modify dice, although in most cases this will happen. Therefore OL ability is not working here.

If Omega Leader has a TL on Han Solo, and Han Solo has Hotshot Co-Pilot :

• If OL attacks Han, OL is forced to spend a focus token, if able.
• If Han attacks OL, OL is forced to spend a focus token, if able.

Is this everyone's understanding?

This seemed quite obvious to me...

IMO, the only perhaps confusing situation would be if OL was the one with Hotshop Copilot... but that's not currently possible.

Example (tournament/competitive game):

Kanan1 (pilot, with HSCP crew) is attacked by enemy ship (Kanan2) at R1 (with HSCP crew) using ABT with AC equipped. Each having 1 focus token.

Kanan1 may spend his focus token at this stage to reduce number of red dice of the enemy and fulfill the requirement of HSCP or keep it for later, to modify zero results of zero green dice rolled (brilliant idea).

Kanan2 has to spend his focus token, but may first decide to use his AC to modify his dice and block any other modifications. This way he will keep it to reduce number of dice thrown by Kanan1 during return fire.

The Question: Can Kanan2 keep his token or is he forced to use it while he is still able to, before moving to resolving AC? Why?

You made that situation a lot more complicated than needed...

Much simpler:

• Ship A with Accuracy Corrector and a focus token attacks Ship B with Hotshop Co-Pilot.
• Is Ship A allowed to use Accuracy Corrector, thus stopping any further dice modifications and "canceling" HSCP's ability?

My opinion on that is that yes, Accuracy Corrector can be used to "counter" HSCP's ability.

Much like The Inquisitor's ability "counters" Autothrusters.

I have used example of Kanan vs Kanan, because it shows a situation in which you have AC and you would like to leave the focus for later, hence you would like to use [AC] to negate HSCP.

It also shows, that you do not have to spend [focus] on the first opportunity but may leave till the end when you may be forced to change zero dice results.

'If able' case:

I think this has to be explained in regards to how one may spend a focus token. Here in the first place we may spend it to modify dice (even zero results) and in such case any restrictions which are active in regards to modifications of dice are applicable (i.e. AC), pilot abilities (i.e. Kanan), upgrade card abilities - this may be modifications or potentially other effects, though I cannot find any that would fall in this category; if it is dice modification then all restrictions are applicable.

Therefore, if you are stopped from modifying (all of your) dice at some point, before you've spent your token, you are no longer able to do it hence you do not have to do it. The Accuracy Corrector case is currently the only scenario in which this is applicable.

EDIT: some typos, highlighted changes in red

has there been a clarification of the Accuracy Corrector interaction yet?

No. We've not had answers to any difficult questions for a couple of months. I can only assume they're waiting til Wave 10 is fully out to do a big FAQ release.

well if the argument for gunner and igd/igb is valid then acc should fall into that basket as gunner states you "may immediately preform a primary attack", so under the choice of resolution rule that allows you to ignore what gunner says,you could block the action of spending the focus to modify dice with acc first.

So until they decide to add a step which include priority actions like for gunner and hscp then acc should block the use of the focus.

Im taking it as, the game flow rules supercedes the gameplay rules if that make sense