My main has always been an artI and I love the mechanics of repeaters - I know they fall off dps wise in endgame because of the silly double shot penalty (mathematically, you could remove it at and it would give the same dps bonus to rxb as it does to gxb, at this point on-hit mechanics are deprecated at endgame and shuriken still get more hits, but ANYWAY...) but for TR or ETR cycling they're still killer effective.
Right now I'm running a 12 art 6 rgr 2 rogue WF. Pretty by the book...T5 BE, Harper, DWS for sniper, built fully for repeater. I'm considering TRing into a 9 rgr/6 fig/5 arti - maybe PDK for the IPL. Trades some arti spells and RA damage for crit mult in kens and extra extra fusillades.
I wanted to bounce that past the forums to see if there's anything major I'm forgetting there, and also just to see what other repeater builds people have enjoyed that I haven't considered, besides the ones built around vorpal, which doesn't really sound like as much fun.