On certain tiles you can cage people with crowd control and essentially hold them trapped as long as you want until other survivors intervene. Is this concernable?

Can you get banned for this?

On many maps you can find rooms or tiles with a single window and a single entrance, for example being the office boxes in rpd or excavator trucks on autohaven. If the window there is already blocked by the hex and the person is inside, you as a killer can body block the only other exit and essentially trap them.

I had this idea on my mind and just pulled it off on two players. They were trapped in an excavator tile the whole time, meanwhile their teammates did two gens, opened the doors and left without thinking about them at all. They died by end game collapse lmao. I know I know this is rude of me but that's why I'm asking here

You can counter this by your teammates cleansing the totem or just spamming vaults around the map, (CC can only hold 5 windows at once) but unless the others know directly what's happening, I assume you're just gonna be left to die in an average solo que lobby. It's not an impossible scenario but If you play alone and have no comms I assume it's hell. Especially if the killer uses hex defense perks.