i imagine if strong works o nstatus moves it'd make them "more effective" in some fashion, possibly at some extra cost.Another thing about Status Moves for the game mechanics is the style mechanic. So far there doesn't seem to be any advantage of using Status Moves in Strong Style. If all Strong does is boost your damage, Status sounds to be unnaffected, which in turn means you would always want to use Agile for Status, which idt sounds very interesting. Wonder if we are missing anything that could change that?
On the topic of Leech Seed though, me and some friends were discussing Voltirb and Yung Dramps brought up the possibility of it being a SubSeeder. Its site desc mentions it stores Seeds inside itself, and assuming it evolves to something at least somewhat similar to Kantonian Electrode, its going to not only have impecable Speed, but also have the ability Soundproof, which improves SubSeed sets since Sound moves no longer can bypass your strat (with the bonus effect of being immune to the main Special Bug STAB lol)
Like Strong Thunder Wave or Stun Spore might bypass immunity or give "super" paralysis, but might see a bigger accuracy hit. Something like Calm Mind might special attack by 2 but maybe lower your speed.