I'll admit, I optimized for my ability scores to the best of my ability, though I haven't really done anything above-and-beyond (9 Str, 14 Dex, 14 Con, 14 Int, 10 Wis, 16 Cha after racial modifiers).
I might still play a rogue, though I've been wanting to play a Warlock for so long that I'm putting it together to see where it goes. Depends on whether it seems like it'll be too redundant with bhu's character.
Most of all, I'm looking for something fun to play. I'll try to get the most out of my character, but I'm not likely to do much in the way of dipping.
Clanjos: The Magic Initiate feat can probably do what you're looking for if you're just getting a 1-level dip for some attack cantrips and a single 1st level spell. So you could totally go Barbarian 20 and still throw around bolts of magic doom.
trappedslider: Can you please repeat the question? I can't seem to find it.