>>36301918you're pretty much good. IMO the only reason to play the original ones is the nostalgia.
A lot of the gameplay is really streamlined by gen 3/4 with better movepools, physical/special split, and abilities. Going back can be a little frustrating at times but challenging if you like the slower paced "good ol' days".
If you're a completionist with some time on your hands, by all means play them, just know they'll feel like more of a grind