One thing that I find interesting to note is how, as of 3145, the Inner Sphere has (at least temporarily) found itself with two active theatres of conflict, which are only distantly connected to one another; both spinward and anti-spinward of Terra.
If you consider the "buffer zone" as running through the Rasalhague Dominion down to the Fortress' coreward border with the Vega Protectorate, and extend down past the rimward edge of the Fortress along the currently-quiet frontier between Liao and "Marik" space, you currently have a dividing line of sorts keeping the Falcon/Horse/Wolf/Lyran/FWL/etc and Combine/Suns/Confederation/Raven/other axes somewhat apart from one another.
I find it interesting how these two theatres show such very different dynamics. The "western" (anti-spinward) theatre is rife with instability, with rival Clans (and Clan philosophies) on the move, House Steiner fending off a nightmare of its former Archon's creation, the Free Worlds League trying to hold the thin line connecting its own spinward and anti-spinward halves together, the Regulans still in play as a wild card, the Anduriens trying to leverage its Canopian and Capellan alliances against the potential actions of its "purple" neighbours, the Republic Remnant and the Galatean League each trying to hold back the seemingly inevitable, and even the Marians finally trying to get over the whole Lothian thing.
On the other hand, the "eastern" (spinward) theatre has fewer active participants, but a clearer focus on who is gaining, and who is losing, by this point. The DCMS and CCAF have ripped their respective pounds of flesh out of the Draconis and Capellan Marches, the Snow Ravens have looked to exploit the recent course of events, and both "Taurian" states actually look like they might find a way to get the band back together at long last. (And one detail I found worthy of note on the 3145 map is that, despite the major losses it has suffered, the Federated Suns still seems to be larger in volume than any one of the states over on the anti-spinward side of Terra. A scant consolation for Davion fans, perhaps.)
Of course, everyone is still waiting for the other shoe to drop, and for the ilClan sourcebook to (possibly) bring both sides of the Inner Sphere crashing together; but in the meantime, which theatre of conflict do you find more interesting as of 3145?
EDIT: Well, I suppose technically you could consider the Republic-ComStar "issues" behind the walls of the Fortress to be a third theatre in and of itself; though it remains to be seen just how serious things ended up getting on that front.