I haven't been in this thread for a while, it's like coming back to visit old friends.
Estate, for me (primarily TDM) is never a problem. If people want to hole up in the house, you can chill in front of boathouse taking potshots in the front door/upstairs, snipe from the white staircase, snipe from the garage, the workshop down at the bottom, the greenhouse, etc.
Or go the rushing route: you can toss smoke and rush the front door, the basement, follow a flashbang in through the living room window, go over the log ramp at the back, go over the small hedges out front on to the woodpile, then jump to the balcony on the front of the house and storm straight into the bedroom(which very few people seem to know about. But it is a difficult jump to time).
There's just so many entrances into the place and to shoot into it from that I can't understand the complaints.
And objective games chilling inthe house is a great way to lose since you intentionally cordon yourself off from the fight.
Moral of the story? Don't go in the house, it's a deathtrap against any organized resistance (if you're pubbing with guys that just rush the front door over and over...well, then you're on your own. Sorry.
EDIT:
As for always spawning away from the fight in objective games on big maps, you can blame the campers on your team. A game if domination is pretty much over on Derail if you have one guy who refuses to stop sniping on the houses, because when you die you will always spawn back in the town and have to slog all the way back to the fight across open ground. That's one of the reasons I avoid pubbing objectives, if people won't listen to you when you say we have to move up, you're pretty much screwed unless you manage a fantastic flank that switches the spawns. More often a flank results in getting an objective to 3/4s, dying, and spawning back by your sniper. So frustrating and just not worth it, I'd rather just go play TDM instead.