An idea for discussion, to try to encourage more variation in admirals and build styles.
Tarkin, Thrawn, Vader, Ackbar, Motti and Leia - go to 30 points
Tagge works every turn
All the other rebel generals go to 20 points
Other Imperials stay as is.
My logic being that the only real 'generic' commanders that are always useful in almost any fleet config are now all grouped at 30. The two exceptions ackbar and vader are powerful but tend to restrict your build especially in the current squadron domination. EG If you are maxing out ackbar, another 8 points isn't going to change your lists strengths and weaknesses, but making him a bit cheaper may allow for a more balanced list?
The other rebels tend to be quite restrictive in application, although I haven't particularly considered mon mothma and how she fits - potentially she could go up a bit.