I made an RP primarily to play it as DPS, and put my thoughts here:
viewtopic.php?t=51200
But it short;
It's fairly strong support AOE dps, that in terms of damage can be at or above other equally geared DPS.
The main difference as mentioned above, completely lacks burst and kill potential (no 50% heal debuff, etc.).
You do make up for it with raw damage and the armor debuff, but only in groups big enough to support and take advantage of you (usually as a 1 of in wb).
Main problems I came across was you need to go close range for full damage with Rune of Might, so needs guard more than a regular ranged dps, and RoM needs SM with WW to maximize, getting both in a PUG WB is very rare.
And pugs, be it rvr or sc will usually lack healers, so you'll get some push back for going DPS there as well.
If you run with a regular organized slayer/wl melee ball wb, I'm sure you could convince them of a spot once geared, especially now with AoE heal debuff available.
And in this setting you wont be too squishy as you don't need to go full glass cannon.
Mid tier sc as dps is very fun, just going full right tree, it's a real little midget powerhouse.
Didn't try ST DPS, but sounds like that's an option too.
So as long as you are okay with more of a support role in non-competitive modes and switching to heal or hybrid from time to time, it's actuall a good time.