I too liked the separate rubber rims but understand why they chose to integrate them back in. On the one hand it made painting the rubber portion easier, but more care had to be taken with the actual hubs to avoid paint buildup on the mating surfaces resulting in the tires splitting when fitted. Catch-22 I guess.
Good to hear. The general consensus seems to be that this is one of those kits with very few areas to watch out for, I'm looking forward to building it. One thing that I noticed as an interesting innovation on the decal marking sheet was the fact that the "totenkopf" emblem for the one Panzer Gray scheme has the white skull and black outlines as separate decals for overlaying on each other to produce the single marking. A neat trick IMHO similar to the "number jungle" style of license plates approach in other kits.