So I tried the
Rougue Tech mod. Quite big and includes a simple all in one installer. TONS of changes and more than a few bugs that I found in my few hours of playing with it.
I really didn't like it and/or the few bugs I found, so I deleted the whole mod folder and tried going back to my existing (all 7k plus days of it! ) campaign and it was bugged and crashed. I reinstalled Battle Tech and my existing campaign was still there and worked fine.
Heck, we have a couple of months at least till something really new comes out , so I figured I would try a new Iron Man campaign. Interesting so far, have only played a few hours yesterday.