KaeYoss, I dunno if you've ever had a strong roleplay character that can't contribute to action scenes at all. If Cion is playing in a game with even one fight per session on average, he's really going to want a character that can contribute effectively to fights. From experience, I can tell you that playing a combat-sucky character in such a campaign is no fun -- and if there's a standard amount of combat in the campaign, it'd be positively miserable.
Part of the challenge of 3E is trying to find a way to have both an original and an effective PC. I'm working on just this issue now with my druid, whom I want to turn into an earth-based caster. Using the core books, he can cast...
...hmm...
...Stone Shape! Soften earth and stone! Spike stones! ooh, scary!
Anyway, I think Cion is being totally appropriate trying to find ways to make his PC more effective.
Your BAB isn't going to be as terrible as I first thought it'd be: at eleventh level, it'll be +7, compared to a straight rogue or bard's BAB of +8. Nevertheless, you'll probably want to focus on dex-based attacks. As a halfling, don't forget your bonus with thrown weapons.
Consider, then, the following feats:
Imp Init
Point Blank Shot
Rapid Shot
Precise Shot
Get a HHH as soon as possible, and keep a lot of flasks of acid and alchemist's fire in there. Pulling them from the haversack is a free action, so by ninth level, you can throw three of them per round; if you get initiative and catch the enemy flatfooted within 30', you'll be rolling +6 (BAB) +1(size) +1(point-blank) +1(halfling thrown weapon) +4 (dex) -2 (rapid shot) = +11/+11/+6, touch attacks, against flatfooted opponents, doing 1d6 +2d6 (sneak attack) +1 (Point blank shot) fire damage per successful attack. That's a reasonable potential of 9d6+3, or an average of 34 points, of damage in the first round of combat. Not too shabby.
You could also look at Dragon 302 for its (excellent, IMO) parrying feats. I just finished playing a 7th-level halfling rogue with weapon finesse (dagger), expertise, and parry, and I very rarely got hit in combat (that is, until a huge fire elemental grappled me and charred me to a crisp -- but that's another story). And it's very easy to imagine a small bard/rogue getting funky with the parry action.
I would rely on a cloak of resistance and on your natural halfling good luck for your saves; just in case, however, ask the party wizard to keep a protection from evil and a dispel magic handy.
Good luck -- this sounds like a fun character!
Daniel