Another potential solution to getting on top buildings is you could have a wallkick where if you are hanging a short distance below the edge of the building and you wall kick you will do a circular motion starting going backwards from the kick, then up, then forward onto the top of the building. This wall kick could also be used for other situations when you would otherwise be stuck to a wall
We want to thank you for such long feedback! We were a little bit limited by time, while we were working on GameJam. But you are right about the difficulty. Buldings were oriented to be less and less accessible. We did have plenty of ideas about game enhancements, but we could developed this one here.
Yet, not only you noticed a potential in here. Which i want to thank you about, once more :D