Agreed on the window size change.
But I don't feel like sentries come back all that fast, unless the team already has multiple engineers and/or a stocked dispenser nearby.
I've been thinking about it, and it's possible that reducing the ammo crates would *increase* stalemates. I think this is what spoolin is talking about, but if a team takes a point, those ammo crates are what help them move up and establish a new point.
Also, now that spies restock their clock off of ammo, reducing the ammo size would limit spy choices.
One change I would like to possibly see, though, is repositioning the ammo/health that is over the mine exits at 2/4. It's hard to be considerate and only take the health (or maybe the ammo), especially if an engineer has built up there. Sometimes your only path is through a power-up that you don't really want to take.
Also, have you thought about changing the slope of the canyon wall? It's possible to drop down and use the ramp on one side, so you don't take damage, but dropping off the other side hurts a good bit. Maybe that's intentional, but if it's not, if the corner had a bit of a grade on it, then sliding down without taking the damage hit would be very cool.
Thanks for all your work on the map. It's a blast to play.