Hero           Fighter/Adept Base

Duskblade (To be worked on with Oni)
Warlock (To be worked on with Sev)

Witchblade          Hexblade (almost complete)
Swordsage          Tome of Battle
Binder
Incarnate Soul     Magic of Incarnum

I was working on a version of the Warlock myself.  We should probably compare notes sometime to see what we all had in mind.

Most of Warlock stays the same.  For my own games that I DM, I'm going to require an infernal pact.  What this will allow for is to blend in a new ability "Hellfire Blast" that augments Eldrich Blast.

1/day per CHA mod, a warlock an augment his eldrich blast with the raw powers of hellfire.  This allows his next eldrich blast to gain 2d6 damage at level 6, and 1d6 damage for every three levels after that (6d6 max at level 18 ).  If hsi daily allotments are used, a warlock can take 1 point of CON damage for an additional use, up to his maximum CON value.  The drain takes place after the blast takes effect.  A warlock who dies in this manner cannot be raised, as a demon or devil has laid claim to his soul.

I'm looking at a few other warlock PrC's to see if there is anything that I want to add.

*cannot be raised by any means, save that of wish or miracle, or diefic intervention*

Good catch, Sev.

The basics of the class are fairly simple:
DR (Cold Iron) that gets better as he levels
Eldrich Blast as a primary attack that gains damage as he progresses
Hellfire Blast that increases damage on a limited scale
Invocations that are at-will spell like abilities

This is a good alternative to a blaster caster in a party.