My wife got Seize the Fire
for me from the library. Figured if I had a few free hours I'd give it a whirl, really wish I hadn't. I got about forty pages in and put it down... not because I wasn't interested in the concept but because it is a poorly written (and edited I'd say) book. I haven't enjoyed anything Mike Martin has written since parting ways with Andy Mangels.
As far as diversity goes on Titan, I think it's starting to hurt the title. Not because diversity is a bad thing... but because it has become too diverse. The diversity is hurting the 'flow' of the stories in my opinion. Everytime I begin to get into the story the author has to stop and give a detailed description of the characters (which being familiar with Titan I've already read a dozen times).