Thanks very much for the AAR!
First off, your observations concerning ACW seem to reflect my own experiences with the period: Few years ago ACW and AWI were the only two periods I could think of which I knew didn't interest me. Then slowly ACW kept sneaking up on me. Three years passed and now ACW is my biggest 28mm collection and in 2018 ACW has been almost all I played (Sharp Practice and Longstreet). I think the only other things I played was a bit of Fantasy and What a Tanker! tryout games.
Late last year I also had a game of OMH. I really like the Fatigue system, even if it means units 'popping back up' after a while. Since in my mind fatigue is mostly morale/order/nerves (as this is what keeps an army together I think) it makes sense to me. However, we played early war affairs with the strongest units having 8FP if I remember correctly.
I also really appreciate the listing of where the minis and terrain have been acquired at the bottom of the blogpost.