I'm pretty sure there's some people that actually enjoy the chaos that a map with chokepoints gives you. Why else would you even make maps that have chokepoints.
It's ultimately a simple matter of not adding any maps like Metro to the game. Another solution would be map or gamemode specific modifiers, that would increase the reload times of all explosives.
I'm against a flat increase in reload times for all maps/gamemodes though. In the vast majority of the maps, having explosives readily available doesn't cause issues and is part of the fun.
