The original game works great as it is on Crossover. But if you want a load of improvements (importantly higher unit limits and better AI/pathfinding), do play with the patch the modders have made here: https://www.tauniverse.com/forum/showthread.php?t=43735.
The only issue is that their installer does not work on Wine. You need to "copy" the installation (the program files) after patching from a Windows machine to Mac/Linux program that uses Wine. However, it only works with gog.com's Wine implementation on Mac, not Crossover's implementation of Wine, which crashes after the introduction video... After patching, some minor isues are flickering occasionally (resolves with switching from windowed-full screen).
I wonder if others have found success in getting it to play on Crossover.
Not posting this to support yet as the patch is unofficial (the game was made in 1997!)