So what I'm looking at for this list is:

Rexler Brath (37)

-Predator (3)

(40)

Echo (30)

-Veteran's Instincts (1)

-Advanced Cloaking Device (4)

(35)

Leaving me with 25 points left. I'm leaning toward a Royal Guard Pilot with PTL, but idk. What would you guys do with this list? (I'd like to fly one or the other named pilots at least if you're gonna recommend dropping them)

Both look good as they are. You have Rexler to form the base and Echo to flank. You can add an interceptor as another flanker, unless you expect Brath to flank as well. A shuttle can bolster the center of the list and makes a nice companion for Brath because it is much easier to hit. Depends on how you want to fly your Defender.

I'd throw an HCL on Brath and then pick up Backstabber.

I would lean towards a shuttle with EU.

Let’s look at your options:

Royal Guard TIE + PtL 25p

Omicron Group Pilot + Darth Vader 24p

Omicron Group Pilot + EU 25p

2 x Academy Pilot 24p

TIE Bomber + Ordinance <26p

Or an interesting option almost never discussed naked Sigma Squadron Pilot 25p

Then you have the other option of putting a HLC on Rexler leaving you with 18p left.

Named TIE Fighter 16-18p

Alpha Squadron Pilot 18p

Scimitar Squadron Pilot + Seismic Charges OR Flechette Torpedoes

Not an easy choice to make, I would go for 2xAP/Doom Shuttle or go crazy with naked Sigma Squadron Pilot (with Echo and Rexler in the list it will be a low prio target)

Looks like a very interesting build!

Either:

Put an HLC on Brath and get Backstabber/Mauler

or

OGP with an EU