Okay, I've got a couple possible builds right now, each focused a bit more on melee combat... Though I'm still not sure which I should go with... A little input/opinion-giving would be welcome.
1. AoO-Focused, Heavily-Armored Front-liner. Human.
2. Semi-Sneaky, sudden invisibility and sneak attacks, wand/staff usage, reach SA. Goblin (yes, I want to play a psychotic Goblin contacting occult spirits for power.

)
3. Mounted Combat-focused, lance and greatsword, using Ride-By charges, etc. This one might not be feasible if the DM suggests mounts aren't a great idea, though I would have greatsword to fall back on. Human, maybe Half-Giant.
Then I've got a couple in mind that are far less melee-focused, but might be good for the party anyway... (depends on how WD focuses his mage)
4. Illusionist/Trickster, free illusions and Phantasmal Killer ability, wand/staff usage, high DCs. Human or Spellscale (Races of the Dragon).
5. Blasting + Control, lightning bolts, blinding, confusion, paralysis and a host of nasty tricks. Again, Human or Spellscale.
I
know I can make any of these work. I'm just really indecisive at the moment... And as a further note, I can swap (to a degree) between these styles. I just like to have a bit of focus to my feats and it helps iron out ability scores for me.