a)
Transform > Scale does not have Percentage adjustment. (Difficult to adjust % just by eyeballing the Indicator popup). More useful - and more logical, I'd think - for Scale transform (rather than changing Size by Pixel Dimensions).
All other Transform options have numeric values in Bottom Bar but not Scale.
In Scale > Other, the Bottom Bar options are repeated. There looks to be room enough for Percentage to be available in Bottom bar?
b)
Also... In Paint > Symmetry : it's an Either-Or, Horiz or Vert, but both are always highlighted (so not obvious which is active if Visible is set to Off), but also it suggests it would be a both ways (diagonal) effect (which would be useful).
And, as it is, 'Enabled' seems redundant: just selecting either H or V enables symmetry.
c)
And... Would it be possible to have a continuous press to multiple undo/redo. (Or maybe that's possible now , and I've just not discovered how).
d)
Finally... Can I add my voice to the idea of a User-editable Quick Menu. So very useful.
(PS... Thanks for adding continuous press for Transform >Nudge. And for other changes and additions).