It's actually based on existing Poke Ball called Love Ball. There's no lore stating that you can't add a function or modify a Pokeball. Adding a vibe remote control should be easy on the level of technological progress Pokemon world at.
Artist posted this about half an hour after the episode aired. The episode had an advanced screening, but the artist mentioned not know what was going to happen in an earlier tweet, so it counts.
I wonder if the sukonbu are supposed to represent other Hololive characters? The one with the winding key on its head is suspiciously specific...
That's the Nejima Kitsune (Wind-Up Fox), a mascot designed by Fubuki well before Cecilia's debut. The tag has been added, along with others. (Fubuki has several mascot characters.)
When it comes to obvious design, it is obviously that Warship Girls have the best depiction of Lex and Sara (with the KC counterpart can compete on Sara though)
I wonder what's gonna be Wa2000/Makiatto's reaction when she finds out that HK416/Klukai is asserting that she's the only (assault) rifle that you'll need
