The only thing you're talking about is you need all kinds of slack to play pool. The point of tighter equipment is precision. The game - and the breed - improves with the stiffer requirements. A challenge might help get that rolling.Straight Pool is MADE for larger pockets. Having different sections of a pocket available to aim to allows for greater angles and more options to break open clusters, create break shots, etc, during a run. These tests of straight pool knowledge separate the good from the great player. A sub 4" pocket for straight pool is silly, and would be incredibly boring to watch.
I like tight pockets but look around. The Americans aren't cutting it. It's the buckets that are silly.