I haven't seen it since the one time I watched it lol, so I can't comment on the bike sequence, but the part at the beginning on the mountain, I thought was really good and I now realize that was Oscar Isaac lol. As far as the dialogue, I can't say I was bored but then Greengrass favours the "smell the fart" 70's approach to dialogue, where it's minimalisitic and at times we have to guess what characters are thinking. Renner is a supporting actor IMO, not an action lead but I thought Weisz was fine and added a little but of heart that had been missing since Marie was killed off in the worst creative call of the franchise IMO.
I agree with you on the importance of spacial geography in action sequences or more precisely chase sequences, otherwise they are just a bunch of shots slapped together, but with 3 million edits I feel so nauseous that I lose track anyway lol, was it the 3rd film that had the rooftop chase? When I saw it at the cinema I actually closed my eyes as I started to feel queasy with all the rapid cuts

To this day I still think Identity is the best Bourne movie with the best action, the best car chase and the most humanity.