I'm not sure which one you're referring to but the following countries have skins ...
C-101EB: Spain, USA, UK, France, Georgia, Russia
C-101CC: Spain, USA, Georgia, Russia, Honduras, Chile, Jordan
For USA and Spain, you should see liveries for both the C-101EB and the C-101CC. For UK and France, only the C-101EB. And, of course, there are a number of other countries with skins.
Any updates to the C-101 are usually listed in the DCS World patch notes. I don't think there was much for the C-101 in the latest patch other than the Georgian skin for the C-101EB and maybe a couple of small things that snuck in.
Sorry. Not a multi-player guy. You'd have to ask someone familiar with running servers. I'm going to take a guess and say it's possible but don't really know.
You might be able to add weapons using the lua but this is likely a lot more work.
As a loose substitute, why not? C-101CC looks to be a little underpowered and under-armed compared to the A-37 but it's a fun module with multi-crew capability. Decent for COIN ops.
Thanks for the latest Open Beta updates.
However, I don't see the new Georgia skins for the C-101EB. I do see them for the C-101CC.
EDIT:
Also, I don't see the camera light go on when I press the camera button on the control stick and the camera is mounted
I'd prefer they just show us something when they have something to show. It was nice to see all those lovely screenshots after basically years of silence on the Mirage F-1. Not that I want years to go by without updates.