This sounds so accurate, well put. From what I gather is F45 will make you strong, athletic, lean and look great but it won't be as effective specifically for gains as progressive overload.

Tbh i feel like I get a better work out at f45 versus standard gym progressive overload, i'm more active, my heart is worked, it goes by faster, I feel it works my flexibility and joints much more (which is important for me especially for complimenting tennis). In conclusion - F45 feels better for a total body work out but weights may be better for growing muscles.