Like I said though, that's actually WAY better than just having the new maneuver on your dial.

Being able to switch from a 3 turn to a 3 T-Roll at the moment you reveal your dial is a lot more powerful than choosing it when you set your dial. Because some or all of your opponents ships may have already moved at that point, and being able to switch your firing arc 90% at that point is huge.

So if you were to put that wording on a T-65 Title card along with a Boost and an extra shield, you'd actually be making the T-65 a BETTER ship than the T-70.

The suggestion on how to implement completely new dials to old ships is simple: Don't.

Perhaps that is not the answer you want to here but the alternatives are so messy that they should never happen. Except for the Scum getting repainted dials because some people believe they must match each ship model in this game has its own dial that is as much about the ship's identity as anything else.

Just because there shouldn't be new dials for old ships there are still ways to introduce new maneuvers to old ships via special abilities that alter the planned maneuver.