I personally don’t like the lollipop approach (as the only way to edit midi note velocity).
I would like to see more ‘in editor’ midi editing, especially as the future implementation of MPE(1) (as other software achieves) is heavily based on a single editing window (such that the MIDI notes themselves have parameters that are shown as overlays- on top of the MIDI note bar.)
In logic (although there is also a separate velocity lane) there is also a bar across the MIDI note that shows (along with colour) the velocity:
Also it is good to have this as another tool, so that one does not need to use the scroll wheel, and could activate velocity editing via a key command, or possibly right-click menu.
One strong aspect of current MIDI editing in Ardour is its ‘in track’ approach, which I believe is very easy, as it puts the MIDI events into the context of the material worked on.
(1) I understand that currently MPE may / may not be in 6.0 or 6.x - but as MPE as been adopted as a standard by the MMA it may be good to look at MIDI editing approaches that point in the same direction.