I've been away from RPG myself for a while; got a bit fed up with it for a bit, and other stuff got in the way much like yourself. 
I also recently rediscovered my love for BattleTech, as it was one of my first and favourite mecha setting and franchises. 
I'm not overly familiar with the lore past the Clan invasion era, but I've been brushing up a little bit here and there. From the sound of it, the freedom of the Jihad era and the presence of a clear 'bad guy' threat makes it seem like a good period to base a game in though. 
I'd be up for joining in, or at least giving it a try.