xcostum_Public_Pool(by_Warsaken) (when I first started using CompoPack I would always find one of these to make a base in. Sentimental value)
Honorable mentions that aren't currently in CompPack:
HarbingerLabs (by Riah)
sewer_layout (by Evilracc0on)
Eden Center Mall (not updated for a19 sadly, apparently they are remaking it)
Actually have most of the stuff in the prefabs set to "unique" for nitrogen.
Pet peeves include, but are not limited to:
Blocks painted to look like containers but aren't.
Huge footprint, no action (big PoI's with few spawns and little loot). Looking cool doesn't count for much if there's no real reason to go there.
(Jammed) Storage Chest/Crate/Drawer empty containers and/or Apache Artifact chests everywhere
Improvised closet/truck doors and similar made of cement or other inappropriate material.
PoI's I've prevented from spawning at all:
xcostum_TheSphinx3(by_Andyjoki) (bad performance from, presumably, all the torches/candles)
xcostum_ThemePark(by_stallionsden) (phantom blocks always happen for me at this PoI, with the new clustering of wilderness PoI's in Nitrogen it's even worse. Also many of the structures are pretty unstable, wrenching something or breaking a block can cause mass collapse. Real shame, it's a great PoI with plenty of action).
xcostum_rave_factory(by_orak) (frigging lag lights)