I won't get too into things because I haven't played a huge amount of games in this new meta, but that Regilecki set seems extremely suboptimal. Regilecki already outspeeds the entire unboosted meta, so there shouldn't be any reason you're investing even more speed into it unless you're trying to outspeed some benchmark. It would probably make a lot more sense to revamp the set to focus on a mixed set somehow using Explosion, Volt Switch, and screens perhaps, since you're not beating ground types and you don't want to lose momentum from the grounds anyways.
