An interesting idea for an Au. Reading through the thread, I'm unclear as to wether the clans have omnimechs. I think they should, just that it's limited to intro (lvl1 tech) only. I haven't seen a mention of the improved gunnery/ piloting for clan mechwarriors. To me, the whole trained to be warriors from birth in an environment in which its understood that not everyone will become one would be more than enough to produce the better skilled warrior.
What about the iron womb technology? If my memory serves me, that was a post exodus advancement. If that tech was never developed, then what? A eugenics caste perhaps? hmmm.......
It's a strange interpretation of OmniTech, really. I defined my own version of Class A and Class B refits. In reality, you get the stock configuration which comes equipped with all weapons. So if your Clan uses a CPLT-C1 Catapult it comes with everything you would see on that model. A Warrior uses that, and depending on his or her style, he or she can perform some "refits" to kind of personalize the machine. All the equipment that you could modify on an OmniMech is basically the same. A basic MechWarrior can only make one Class A refit which is swapping a single system for weapons. SO, this can be replacing an SRM-2 with two medium lasers to fill the space or maybe a medium laser and a heat sink. Those higher in rank can make more of these refits. CASE exists but it is incorporated into ammo pods rather than the chassis itself and it will operate the same way.
In other words, I really liked how Operation: Klondike handled customization and I did my own take on that. Also, I think OmniTech and Clan falls hand in hand.
Warrior Training will create your basic 4/5 Warrior. The EI Implant will enhance that to a 3/4 as my version will work just like the regular implant with a -1 bonus in gunnery and availability on vehicles and fighters. Not only does it tie the warrior with the machine but it paints the field in a way that makes shooting your target much easier. Also, I think EI is freaking sweet.
Other than that, there are some differences (like the "Warrior Phenotype"), but the Clans will basically operate the same.