I beat Wattson, got Rock Smash, boxed Sableye, went up to Route 112, and caught myself a Murkrow. I'm eventually going to need a flier for my team, and Honchkow seems like a fun pick that I haven't used in a playthrough in a while. My 6th party slot will just be a Linoone for Pickup until I decide on an actual 6th team member. I have one in mind, but it's not found until much later in the game and I could change my mind by then.
Another quality-of-life feature I like in this game: you don't actually need to
teach
your Pokemon HM moves. Just having the HM in your bag, a Pokemon capable of learning the move in your party, and the badge required to use it is enough to progress. So my Weepinbell can cut bushes and light up dark caves, and my Luvdisc will be able to handle all of the 7.8/10 too much water in Hoenn, all without clogging up their movesets.
https://i.imgur.com/PmF1p9q.jpg