I specced my 67 marauder in SC to this planned build.
Didn't work, not enough DPS. No, not really. DPS was...not spectacular, could clear docks, didn't do as well in maps as I'd've liked but it was more a survivability issue than a damage one. Also the single target sucks.
See that post for skilltree. Links: flicker - multi - prolif - increased burning - WED. Got to about 10k armour with Grace, I think. Realised I rely a lot more on block than is actually visible, most of the time. Tooltip DPS is no good for burn builds, didn't count it.
I tested with splash (prolif gave higher clear speed and takes its place pretty well), never needed chance to ignite, got more straight damage from the combination of WED and increased burning than from fire pen in either of those slots. Tested without multistrike and it was unbearably slow. So much for that.
Vulnerability self cast is too much micromanagement - works fine for stationary type builds like poison arrow, but when you're flickering all over the place it's trigger gem or nothing. Not sure putting it on trigger would work either but it's gotta be worth a shot.
Used blood dance boots, because didn't have a fire leech anything handy. Didn't really matter because I was taking way too much damage. Two ways to solve that, and one might get me killed on reflect because I'm pretty sure the other already hit diminishing returns. In any case, I'm very map mod limited on this build, so it's not much fun there.
Really, the essential problem here seems to be that prolif builds are once and done, whereas a flicker build relies on constant motion. Therefore, I'd need disproportionate DPS to play flicker proliferate.
You know what? This was a non crit build and I can clear docks with it. Might be a crit version has enough damage to manage the other. Gotta plan that one to try. Might be I can put splash instead of prolif because damage is sufficient, and then I'd get the benefit of culling strike.