It's asinine to compare with LMs and captains.
A single RK can maintain 1 Fall to Our Wrath permanently, and up to 2 FtOWs 20% of time. FtOWs from multiple RKs stack just as well. Vertical debuff stacking is not unique to burglars. The debuff magnitude of FtOW is lesser than burg debuffs, but RKs are compensated with other group utilities that burglars do not have.
A single LM, even traited DPS, can maintain 6+ debuffs permanently on multiple targets, and, traited debuff, 10+ debuffs permanently on multiple targets. A single burglar, traited DPS, can only maintain exactly 2 debuffs permanently, and for the most part, just on 1 target, unless you keep tabbing through to apply tricks, which then cuts into DPS. LM debuffs stack horizontally and (some, not even all) burglar debuffs stack vertically, both are class features and working as intended to accentuate class flavours. You need 5 burglars to stack as many debuffs as 1 single LM, and even then, not even on as many targets.
Captains are primarily buffers, and a single captain can maintain 7 (at least, not sure if I forgot any) buffs permanently, 1 mark permanently, as well as a few others short durations buffs/debuffs like To Arms and OB. Burglars have no permanent group buffs, and the only short duration group buff is that useless signal clickie.
When you keep harping on the stackability of burg debuffs alone, but ignore
all the other group utilities that other support or DPS classes bring, you quite plainly have a myopic view on the overall issue of class balance and fairness, or you don't actually play a burg and are unaware of the class's deficiencies.
Because, seriously,
what else can a burg do in a boss fight if not trick+RW+DPS (and chain mez mezzable adds if there are adds, and CJ on stun-able things if group is willing to contribute)?
Can a burg reliably restore power/morale in a boss fight with no CJ targets? Can a burg remove afflictions efficiently? Can a burg rez? Can a burg provide additional mitigation support (most notably IHW/LS and DNFtX)? Can a burg cure stun? Can a burglar help with aggro management on a raid level (i.e. Ebbing Ire)? Can a burg reliably off-tank/kite? Can a burg mow down multiple add spawns quickly? Etc? The variety of things a burglar can do
in a boss fight and
as a support class is extremely limited, and the kind of DPS a burglar can do
as a DPS class is limited to just positional single-target DPS. It is all fair on the grand scheme of things.
The hunter class has its own issues and those are problems of the hunter class, not the burglar.
Regardless of your class, if you cannot go all out on DPS in a DPS race, your champs and guards don't know what they are doing.
Fact. HIPS is a situational aggro wipe that does not benefit the raid: it only protects the burglar from bad guards, and only works if the burglar does not need to maintain Mischief.
Some of the PVMP armour sets (notably captain's and burglar's) do need to go away, but only because PVP should not have impact on PVE like that.