I think I may have figured out what to do re: D&D, but I'm going to let the idea simmer awhile before I actually do anything with it. In the meantime, the "OMG Giants!" campaign will continue trucking forward in houseruled 3.5 with E-Tools, and of course SWSE will move forward as well. I've figured out what the next Star Wars scenario will be, and it's likely to be another biggie. ("Can you say 'Super Star Destroyer'? Very good. Now can you say it without that terrified simper in your voice? Well, we'll work on that.")
I went out looking for a copy of the Pathfinder Bestiary today, but was failed by both the FLGS and Barnes & Noble. I don't want to resort to ordering it online just to see if the monster-building stuff is any different from what's already in the 3.5 Monster Manual ... so I guess I'll just have to keep my eyes open for another copy to pop up somewhere.