The basic version of the rifleman is ok, but once you upgrade him, it's weapon will turn completely black and won't turn back to normal, not to mention that (for me at least) the ultimate version always have a red body, yes I'm aware that some skins won't load if you play more than one game in a row, but this bug or whatever happens even of my first game.
The runcorpsmen: I believe you should reduce the population it takes. While you can reduce the bushranger and corpsmen population by choosing a specific politician 6 population and then 3 seems too much. I have tested them against some of habsburgs units such as the Grenzer, and while I'm aware that different nations = different gameplay, I just can't see how this unit is useful. Grenzer takes 2 population and wins the fight, so if a mercenarie takes less populations and is cheaper (using habsburgs bank option you can get them easily) then I believe there's something wrong with it. Not to mention how expensive they are, and how australians are in need of coin to produce villagers and their basic units aren't precisely cheap. But overall this is just my take on it. Maybe since you guys are far more wise on the matter, you could explain better to me.
Have a nice day
Oh I forgot to mention something elsem while building houses on the industrial age, sometimes the houses will automatically destroy themselfs. Only happened to me on the map that Van diemers land or something. Sorry if I butchered the name.