I played on Easy, but I think I had crazy luck or something since by the end of my game I had most companies at 80. Early on I invested in Moriya because I love danger, and I almost always rolled 4+ on them, so they kept splitting! I ended up getting Momoyo to Love :)
I was surprised at how fun I found this!! I was sort of afraid to try it out since it has math, my greatest enemy, but not even one full round in it sort of clicked and I got really excited about it. I think the board design could use a tiny bit of tweaking (the price change tables being staggered made it easy to miss Kawashiro and use Yamawaro's table, for example). Another suggested change would perhaps be to change "Month" in the rules to "Turns"—it was a little difficult for me to understand you can do a move multiple times in a "month" since I wasn't sure if I had to replay the phases a certain number of times to progress it. Could be a "bad at reading comprehension" thing, but I think it would help understand the rules at a glance too!
Overall though, despite Vassal deciding to bless me with great fortune, I think the game is really well balanced and very fun to play!! I hope other people give it a try: it's super easy to get into and have a great time doing it.