Re-open Old Black Dragon hq and PP lab to combat.
I understand that exploiters take advantage of certain places to level. After the devs fixed the droner problems with ceilings and ammo exploits I see no reason why this game content needs to eliminated. Removing game content instead of addressing the real issue of the exploit has been a horrible way to handle problems for long enough.
PP lab should be opened back up because that area has added so much to the pvp experience. If the issue is killing guards for exp, then I really must say this. If the guard is red on my screen then he should be viewed as an enemy and open to conflict.