Gestures will not work if done over a certain part of a page (seems to be frame, not sure). (the pages work fine with other gestures extensions)

It doesn't mousewheel between tabs properly (the Windows context menu comes up).

Several basic actions missing like for example 'open link in background tab'.

Menu doesn't allow for gestures to be set if already taken. You must change the one that has it first, and if you don't know which one has it, every single one must be opened to check which is a PITA.

This seems unfinished and needs a lot of work. Nice try though.