1. Vekk. I'm constantly amazed how people can know about ER eles, yet still manage to do them completely wrong. Sigh. Give it INFUSE HEALTH @3 healing and remove JGaze and probably RoF too. Infuse is the biggest redbarup in the game, with the fastest cast, instant recharge, and ER removes both its energy and health costs. You do not need any other redbarup. What's more, the hero AI has a bad habit of waiting for an inferior redbarup to recharge rather than casting Infuse.
Other than that, Convert Hexes is a better hex removal than Cure when you can afford the high cost, which Vekk can. Also, removing the redundant inferior redbarups can make room to put Aegis over here.
2. Olias. Needs more SR and less Prot. Then you can drop SoLS. Masochism serves no point since it doesn't boost Death Nova that much, and Bone Minions are hopelessly weak with or without it. (That's fine since their job is to grab aggro, die promptly, and explode.) Mend Ailment? Blah! Foul Feast+Infuse Condition. Already talked about moving Aegis. There's nothing wrong with SoA, but it probably doesn't contribute enough at a mid spec to justify speccing prot at all. Consider dropping it. Dwayna's Sorrow performs well at mid spec. As do numerous curse skills like Enfeebling Blood, and Barbs/MoP (to a lesser degree).
3. Xandra. I don't see anything wrong with this build. Depending on how many copies of SoH it's going to be maintaining, CastiSig might be overkill on the e-management.
However, there may be a better option. If your team has lots of physical damage and lots of adrenal skills (or even just a few important ones like SY!), or if you've got a friend along with GDW, then you might consider Orders+SoH in place of this build.
Something like: OoV, Mark of Fury, Blood Bond, SoH, Smite Hex, Smite Condition, SoLS, Jaundiced Gaze, with those last four skills being optional.
Thanks alot already! I've updated both Vekk and Olias. This is how they look now.
Olias (I'm running myself to Port Sledge today to get Infuse Condition for the empty slot):
http://img242.imageshack.us/i/olias2.jpg/
Vekk:
http://img692.imageshack.us/i/vekk2.jpg/
Are they alright like this or do you have more suggestions?
EDIT: I know Olias isn't lv 20 yet. So when he gets to lv 20 the remaing points go into Soul Reaping (he now has 10+1 SR and 12+1+3 Death Magic).