You guys must be joking, Evilswarms are not the best deck to main this as you need to wait a turn to use Master Beetle effect, believe it or not the deck that can make the best use of this is Elemental Dragons, I can't say all the times I've summoned Radiance first turn and set Vanity, that play have gave me and other friends multiple wins vs the mirror match, it even works vs Evilswarms as they can't special summon anything.
Beetle can use its effect on Set cards, so yea...
Yes, Stardust Radiance and Vanity is great also, but Beetle can still extend its protection to one more card. And unlike Draogn Rulers, who are all about special summons, we still have powerful beaters like Heliotrope and the almost invincible Thunderbird to back Beetle up on the field. And should you ever feel a need to special summon, Beetle can be tributed for EEV, which would pop their spells/traps, while simultaneously lifting the SS restriction off of you.
I'm just saying, Vanity is more useful to Evilswarm than it is to Dragon Rulers.