Well, I guess I'll post follow-up here for posterity's sake :S
I put in new plugs yesterday (5 hours of cursing the engineers who crammed stuff in there so tight!) and noticed a small imporvement in the hesitation, but it's not gone. I guess I'll see what happens at highways speeds on my way home from work Monday. *Every single rubber boot* for the coil pack stayed stuck to the spark, and I had to spend 10-20 minutes on each one trying to yank it out with a pair of needle-nosed plyers. It was nearly impossible to do on the 2 rear driver's side plugs, but I got them off. Also, the front passenger side coil was broken! I don't think I did it, either! I was going to super-glue it, but then realized I would have flammable glue on a very hot, electrified component LOL not one of my brightest moments! So I electrical-taped it together to keep moisture etc. out. If I'm *not* the one who broke it, I wonder if that could be the cause of my cold hesitation....