I feel strelets are OK they are cheap and go in big numbers, but musks just suck so much.
It’s incredible how fast they die even vs Cav(unit they suppose to counter). You can’t hold anything when enemies are full cav + skirmishers. The obvious solution would be helbardier but they are really expensive for what they do and also die easy.
Cav archer is really expensive also, and gets insta killed by skirmishers.
Musketeer may need some HP buff, at least to survive mass cav.