I am working on 4th war stuff but its weeks away. I work on it when I can but I've a 93 year old mother in law I've got to help look after. As she's a touch demented it can be difficult, humorous, and wildly chaotic. It's certainly an experience! And it's also first call on my time because this is a hobby, not a job, and that's family.
I may wait for Urban Warfare to incorporate the changes and maps from that which also gives me more chance to polish. Going is slow because I haven't done anything with computer code of any kind in ohhhh about 20 years or sooooo. It's been awhile.
The main issue with doing a 4th war mod is we're in the wrong corner of inner sphere. During the 4th way this part of space currently portrayed in the game was rather on the quiet side. I may have to very well learn how to make the games star maps to do what I want which will mean more time spent. I'm a bit of a perfectionist. But maybe I'll get lucky and someone will do regional star maps for the game.
As for 4th war time period I'm guessing the Arano restoration was PEACEFULLY absorbed into the Tarian Concordat as it core worlds were originally colonized by the Concordat. As the 4th war period was a time of lowered tensions and co-operative development between the the Tarians and the Magistry of Canopus as both wanted to not be involved in the current series of wars and led to the founding of a joint force known as the Colonial Marshals to clean up and monitor joint colonization efforts on the unclaimed and independent world laying between them. And to send a good many pirate and outlaw bands either on their way or into the the grave.
Now as for 4th war flavor I would recommend 3025 Extended, and weapons diversity 3025. While a full on controlling a merc command during the 4th war just isn't possible.. YET.. it is a possible long long term goal. I can promise you we old guys want it! We've only been waiting for a operational;/tactical merc game set in the 4th war for ohhhhh.. what 20 years or so? (SLDF royal divisions mod is fun to stack in there too)
Lady Aleko's Rogue Tech works fine for a wild and wooly post clan, post dark age universe, and work has been done to build a timeline into RT. There's a lot to do for the modders and some stuff is just going to have to wait on Mitch and Company over at HBS to do their part because we can only build on what they do. Remember.. this is a commercial product!.
None of this is going to happen quickly. So please don't stress at all. Battletech has been around 30 some years as an IP.. it's not going away any time soon.