You know, I don't think I've ever actually played with or against a Lao Hu. I don't play Capellan all that often, but I do frequently use them as OpFor. I should have accidentally run into one by now, but somehow I've managed to miss it...must be the stealth armor!
Anyway, it looks like a solid design, and I'm honestly not sure I really WANT to go up against one! I'll never argue with a 20-class autocannon, and in this case it seems like the stealth armor is usable and not just on there 'because Capellan'. The C3M version seems odd. The Cappies don't use C3 all that much, so other than giving them a domestically produced Master, it doesn't seem all that great. Still, I think I'll have to work up a FedSuns vs. Confederation fight in MegaMek tonight and see how this little beastie does.
EDIT: Out of curiousity, I wondered over to the MUL, and the only Capellan Mechs with a C3 Master are this Lao Hu variant, the Sunder SD1-OB, and the Yu Huang Y-H9GC. If you add in the IS General list, you get a couple Cyclops, a couple Avatars, and a Gunslinger. There are a couple Vehicles with C3M's, but that is a pretty small list as well, with only three of them being strictly Capellan. So, I guess this would have been probably the first Xin Sheng C3M unit, which makes a little more sense as an expression of the whole 'we need to show we can do it all and make it Capellan, even if we don't really need it' mentality.