I had an idea for a character today and was wondering how to best represent it in the system. Figure d&d 3.5, all wotc material allowed and fairly optimized without getting into anything majority earth shattering. I don't need a complete build, but suggestions would be nice. Assume at least a point buy of 28-32(it's where I build all my characters), probably gestalt as most of the games I'm involved in have gone gestalt the last year or so. Would like the character to be playable at most levels, usually my games range from 5-15 or so, with 6-10 being the sweet spot. I rarely see my games go past 15 and usually start at 5 or 6.
Character idea: Born to a demon or devil mother and wizard father. I'd like some method of representing both sides. Thinking as fiendish abilities from the mother and maybe training from the father. Would love to have the ability to have lots of tricks up his sleeves.
So far, I've looked at warlock//wizard going for eldritch theurge for greatreach blast to deliver touch spells at range, but it's a late bloomer for its ability (around elc 16).
Also looked at warlock//artificer for the ridiculous item creation abilities, especially with hellfire infusion and metamagic infusion. Gets going a little earlier, and gets better as things go along. This one and the next are the ones I think fit the best with my play style. I tend to fulfill the role of problem solver and fixer with my groups. They always seem to be getting into oddball situations, but one player usually plays a career focused on battlefield controller with a bit of utility so it's more of a woops we need an of the wall solution as opposed to a power thing.
Warlock//factotum: can anyone say skill monkey? Use arcane dilettante to represent training for father.
I'd thought about a few other options, but haven't looked into them.
Warlock// non lawful paladin variant(maybe other cha + ability classes)
Sorcerer//warlock: losses some of the ties to his father, but not a huge issue, gains better cha figure focus than wizard or artificer
Has also considered taking a few templates on one side of the gestalt, but the half fiend template costs 4 la, won't be able to be bought off, and while it doesn't cost hd, I'm not convinced it's with half of 4 levels. I could be wrong though. La don't hurt anywhere near as bad in gestalt as the do in regular play, and it's low enough that he could start as early as 4 level of it comes to that.
I like the warlock, and while not a power house, it does give a lot of flavor and a decent base for gestalt, but I could be convinced to use something else without much trouble if it send like a better option.
Mostly just looking for ideas as to how someone else might build this character or improve upon one of the above ideas.