Dear Paul / Robin,
…still an Ardour user here, doing simple old style in-place midi editing ; Paul would be proud of me 
What about making the “Zoom to Selection” ( Editor Window ) a TOGGLE key fuction ?
Not a showstopper, but this is something I miss a bit when doing midi editing in place, without opening the seperate pianoroll window, added in version 9.
Yes I know I can select a region and use the Z and shift-Z keys, but a toggle would be more convenient.
Thanks for reading ! Best Regards, Luc.