Since we are giving survivors basekit UB so they dont get bored.

For a second I thought it was supposed to be about how bad Sadako is 👻

Oh ye I was memeing, I definitely understand how hopeless it can feel when outmatched by survivors. There have been suggestions in the past to let killers open the gates early and start the EGC when there are still gens left, but simultaneously deactivating any EGC perks like noed and blood warden so that killers have a forfeit option earlier in the match like how survivors frequently ragequit on hook. I've even had a more fleshed out idea:

Have a shrine in the basement that only that specific killer can interact with. If they do, the match ends: all survivors alive escape (including if downed and bleeding out,) and it can not be activated if any survivors are on any hooks. Everybody gets any points they accumulated (including the killer) and any additional bonuses (especially regarding the survival category) are applied as normal.

There's even room for flavor animations for all of these things. The killer could have a first person animation of the entity entombing them for punishment/prep for the next trial, survivors could be pulled into the ground and teleported to the exit gates then flung out of them, etc. Hell, they could use those fancy new wesker animations to do it.

If they're not going to address suicide on hook in any meaningful way, they have to give killers a way to get out of trials without eating a penalty or afking and playing a better game while they wait. They've got to address one or the other if they want pairty in their dc punishment system.

The gen speed thing is a bit misleading, because its actually a range of 20-50 seconds total. 10 seconds doesn't add 30 seconds if 3 gens are being worked on at the same time, it adds 10 seconds before 3 gens pop. And since ruin and corrupt got nerfed pretty badly, most killer pressure has to rely on blocking gens or kicking them which mean survivors are even stronger in early game than they were before.

Deadlock is pretty much your best friend for dealing with that stuff, unfortunately. It at least prevents one of the gens from popping in your first chase, and gives you a location to pressure afterward.

The X minutes stipulation can account for part of it, but OP's point was that the match was unwinnable from a pretty early state, and they were forced to go through the motions or afk until the survivors finished and left. Its not as easy as just chasing people out when they're purposely playing less efficient to focus on maximizing their BM, and people often drag matches out when they have no fear of losing. You can literally feel as hopeless as the dreaded 4 min slugs do, so its not really necessary to use that bad situation to try to invalidate someone else's.

I would say to shorten the EGC to 1 minute

And either shorten Gen times to 80 charges or shorten hook times (seems that there are perks for stopping the hook timer)

Also shortening the Blocked Gen perks (Deadlock)

I think a very common misconception about the "smack them at the gate to make them leave" is the match that led up to that point. It has a very different effect mentally when you're just slapping them so they'd leave, vs being subjected to constant bm for the entire time leading up to the "icing on the cake" moment of having to sit there and do 8+ M1's while they get their last kicks in. Its why I don't consider that argument any more or less than telling survivors to afk and do something else if they're forced to bleed out: Most of their frustration comes from everything leading up to being put in that state, as well as their current temperament. They're even trying to find a way to give them free basekit multi-use UB for their troubles, balance and other mechanics be damned.

That's why I say the way to immediately end the match wouldn't be exclusively tied to the last gen being done. It can also be something as short as 5 minutes of game time, then you can end the match no matter what they're up to.

I do apologize as I didn't mean to dismiss anyone, guess I just forget at times as I personally don't experience feeling frustrated in that "icing on the cake" way in situations like that.

And my preferred idea for bleedouts was always just straight up letting slugged survivors in a game state deemed "unrecoverable" teleport themselves onto a basement hook anyway where they're rushed through hook stages with no kobe attempts, not basekit UB of any kind. Just allow players to skip what might be a pointless wait for an already determined outcome without needing the "consent" of their opponent(s), preferably without having to interact with them to do it at all. But still a concession mechanic first and foremost, unlike the UB stuff.

I had something like that to happen to me when I played wraith without any slow down and last gen was on shack 90% done I ended up getting kill though and some hooks but they just wanted to mess around.

The game has a learning curve, especially for killer. Its extremely common for people starting out to have these types of games when paired with players who are more experienced, and even experienced players can have games like this on killers/loadouts/etc that they don't know or understand. I'm just glad they're finally eventually adding the ability to enter custom games with a bot so you can practice things as either side without needing either a buddy or trial by goddamn fire.