I've always felt many of the problems you describe, too. It's not just a you problem, and I've often suspected that timezone constraints are a potential hazard for European players in any online environment I've played in, since they had to be unusually flexible in terms of playtime if they wanted to get anything done. (I've never had anywhere near that level of flexibility, sadly.

)
That being said, your timing couldn't be much better. I just yesterday got the kick in the pants I needed to drop out of Ravenloft and return to BG, I'm European, and I've got a very diverse cast of characters to unshelve from, some of which might fit in with some of yours:
viewtopic.php?f=153&t=69968
(Off the top of my head, I think Mainda/Anna might fit in reasonably well with Bryce, both thematically and mechanically, but it's hard for me to assess compatibility with Karl on any front except character level. I don't think I have anyone fit for Silence, and aside from Mainda, I'm not sure who else might work with Bryce.)