The GM kits have LOTS of round robin layers though. Is this by design because IMAP offers alternate hits? Will it vary from kit to kit? I understand why it's not on the splash and china cymbals but the snares should have it, right? Anyway, just need some clarification on how round robin works.The snare DOES have it. But it is split between the main keys and the extra keys in iMap. But if you want to lose the extra keys then just click on extra key to make it gray and then make the on/off above "randomize" WHITE and that will add it into the main key's alt group. ALL of the maps pool from the same material but iMap is just the most flexible for being able to have things round robin (either sequentially or randomized) AND have some articulations have alts split off onto another key.
But anyway, it's easy enough for me to do an iMap that doesn't have the extra keys used and has MORE round robin. But you're incorrect about it only being for a few kit pieces. It is in practically ALL of the kit pieces. When I explain how it works with graphics maybe it will be more clear perhaps. That's coming this week.
3. Maybe I'm crazy (well, certainly I AM
) but to me, the IMAP kits sound better than the GM kits. Am I hallucinating? 
You might be. They don't sound different but GM is not as expressive as iMap... however it IS a standard so we support it AND these kits sound better than other GM kits that don't have as much animation. Generally speaking (npi).
4. I'm getting some strange level fluctuations. Sometimes, I get clipping (on full velocity tom hits) and other times, I can barely hear the snare hits. I'm using Groove Monkee Blues midi. I haven't noticed this with DM1. Weird
Each kit has different dynamics but you can adjust that. Just go to the VELOCITY tab on each of the kit pieces in that kit and adjust to so it sounds best to you. Some kits may sound better with midi files than others. You can also adjust the level of each articulatin of each kit piece now. It's called "trim" and it is right next to the alts in the mapping page.
The OWD kits are really dynamic in their DL form. It's pretty wide. But that can be a good thing. Different. But tweak it to your liking. That's what all those controls are for.
Good to see that you put some love into it Squids. We try to eat high quality food here too but it can cost almost twice as much and I guess we in the west just got used to food being cheap.
But good fresh ingredients are to be appreciated like anything else. I am not a health nut or anything. I'll eat a hamburger like most other Americans would (and others but we seem to BREATHE hamburgers here)... it's just that there's this place down the street that makes the BEST hamburgers and it happens to even be cheap so if I am going to have one I prefer to have one there. I guess it's how you perceive "quality". 
jk