Hi, this isn't an appropriate topic for a new thread here (with new threads also requiring approval first), I would recommend reading the
Smogon Rules before posting in the future. This would be more appropriate for asking in the
official Smogon Doubles Discord rather than the forum. (Repeating this from my response to
your other thread to reiterate.)
As for feedback on your idea, it's a creative thought, but Belly Drum Snorlax doesn't really need the Analytic boost in the first place! At +6 it should already be KOing most Pokemon, and adding Analytic on top is just overkill. Another problem with Analytic is that the best way to use BD Snorlax is with Trick Room so that it will move first, meaning that the ability would not work in that case. I would recommend just pairing Snorlax with a reliable Trick Room setter instead, such as Cresselia. Skill Swap is a cool move with some interesting possibilities, but Analytic isn't one of them, since it's not
that good anyways, and especially when going through the effort of using Skill Swap isn't worth it.