Personally, I find it extremely tedious to try and look through every single Pokemon's movepool to see if it has a particular move I need for a team. For example, I'm looking for a good Heal Bell user for my current gen 9 team. I know Aromatherapy & Heal Bell got utterly nuked this generation, so few mons have them. The problem comes in finding out what those mons are. This circles back to what I said before-- sure, I COULD look through every movepool of every pokemon in the dex right now....or we could implement a feature that makes these processes much less tedious.
(P.S. I don't mean to sound impatient with this or whatnot. I appreciate showdown immensely for the access it gives people to the pokemon experience for free. This is just a gripe I've had sitting in the back of my mind for a while now, and I figured I'd bring it up since it has become an even larger headache with all these new mons + tiers other than OU not being around yet.)
(P.S. I don't mean to sound impatient with this or whatnot. I appreciate showdown immensely for the access it gives people to the pokemon experience for free. This is just a gripe I've had sitting in the back of my mind for a while now, and I figured I'd bring it up since it has become an even larger headache with all these new mons + tiers other than OU not being around yet.)