How about a 'fire for effect' spawn perk option?
A wide barrage of artillery wipes out any spawn campers within x yards radius from the spawn point ( depending on perkage spent ), thus allowing you to spawn safely.
so.. for 1000 yards barrage, say.. 50 perks
2000 yards, 100 perks
3000 yards 200 perks..
Might add a little risk to getting up there real close...