[MENTION=21379]goatunit[/MENTION] Have you seen this party? I'd be more worried about fading into the background than stealing anyone's spotlight.

Seriously, though. Don't let that be your reason not to play a character. It's better if all the characters can steal the spotlight once in a while. Just as long as they're also able to give it up, eventually. If you're playing Thom because that's who you really want to play, then cool, because no Planescape is complete without meeting its quota in tieflings, and Lower Planar machinations are certainly likely to provide the party with...motivation.

Even so, don't do it because you're worried about stepping on anyone's feet. The game hasn't even started yet.
I do still sort of prefer the first two characters because they seemed more obviously aligned with their faction's goals, which in and of itself provides a good reason to travel far afield of Sigil.
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CanadienneBacon I'm delighted with the idea of an older man having to relearn a completely new world. I can see a lot of potential for lessons shared, old stories of loose ends and past regrets, and all the more reason to want to get home again-- or maybe not, maybe enormous relief at being able to start again?
I'm not going to lie, though. Badass punks playing with magical fire will always have a spot in my heart. I'm backing Shadowrun Returns *again*, for their Hong Kong expansion. That should tell you something.