There have been plenty of times while playing, where either I or an opponent has stated an intent to do something, then paused, and changed their mind, all well within the range of their opportunity to do something. Sometimes, this is reasonable, like saying, "I'll focus. Actually, no, I'll evade." Other times, it's a lot less fair, like taking back a target lock action to barrel roll instead... or executing your maneuver, then asking if you can roll it back to use an R2 Astromech charge beforehand.
This situation can come up with U-Wings. At what point does a U-Wing pilot commit to the rotation granted by Pivot Wing? This came up in a local tournament, and while it was handled pretty quickly and agreeable to both players, it does beg the question of, precisely when has a player passed the point of no return? When does the player have to commit to a SPECIFIC rotation? Is there a point where they can check different rotations to see which ones are most likely to gain a firing arc on an enemy (without measuring, obviously)?
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It seems unlikely that it would take place in any of these steps:
- When you close your pivot wing
- When your dial is revealed
- Before or While you execute the 0-stop
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But does it happen...
- After you execute the 0-stop, when you declare the intent to rotate? (I'd argue that, as long as you haven't gone further than declaring, you can still take it back)
- When you put a marker down to measure the rotation? (To me, this is reasonable intent to rotate, just like putting a template in front of a ship is intent to boost)
- Once you pick up your ship? (This is where I feel one has to decide on the direction of rotation: 90 or 180)
- Once you put your ship on the table? (this seems to be final... no "I think I'd rather make a quarter turn instead of a half turn")