This is all PvP musing, nothing about PvE at all.
I've been tooling around trying to get some PvP builds worked out. My main problem is not getting to targets or getting out of bad situations it's actually killing someone inbetween that.
My toebomber build isn't working as well as I'd like anymore, so I've reworked a bunch of my builds, and here's some musing on the subject:
This is a fairly split build. I want more stuff from BD but I can't go lower than 15 for anathema for obvious reasons.
BD20/RS/INF20: Anti-cleric with stealth
Sacrifice some movement (flash) in BD and some survivability (parry) for perma-stealth and the mana draining finisher. I honestly don't see the point in that finisher considering there's better anti-mage builds with more burst and anathema is what will turn the cleric tables in the end.
RS32/ASN34/SAB0: General build
This is what I'm in most of the time. It has long term fight survival from RS, lots of battlefield movement, the two best escape powers. (slip away w/perma stealth and memory capture)