I've never had any problems with KS. Actually the problem you'd be a lot more likely to face here is PK, not KS. People don't care about the spawns since everybody is 255/255 within minutes either way. I've been attacked a fair number of times while leveling at common places like thor_v03 and lhz_dun03 though. Note that lhz_dun03 mobs are buffed.
This server, unlike RebirthRO, is a highrate. Leveling takes a few mins at best.
Also sorta off topic, but personally I just bought the donate headgear on RebirthRO with zeny (I played on lowrate though, I hear midrate was horrible). Donates didn't really rule lowrate at all. Same here I guess.
ForsakenRO has donates, but 1. They're obtainable through NPCs ingame in exchange for donation coupons (our currency; 1d = ~23m zeny); and 2. Donates don't make you rule at pvp. The sets only have 2 slots instead of 4; there's nothing overpowered like EDP cards, warm wind cards or level 10 bash sinxs. It is possible to kill using just non-donate (elite sets) gear too; and not suck.
There's even a special non-donate pvp room.
This server has auras disabled completely.