I am a little torn between wanting the suit back and being happy with the way it is now.
Initially, I was quite disappointed that it got destroyed and low-key hoped that maybe Franky and Usopp would create something even cooler than RS, so Sanji could have kinda RS but unique and better, and not tying him to Germa 66.
However, as time passed and seeing how Queen was defeated in the end, I accepted the destruction of RS. It makes sense from a narrative standpoint, with Sanji choosing his own strength over the inhuman science developed by his biological father. Sanji can do anything w/o RS now - fly, become invisible, tank attacks - so it was just an accelerator to unlock his true potential (the logic of how exactly it helped escapes me, but hey, fantasy manga, fantasy science, so let's not dive deep into that).
What I'm truly disappointed with is that Sanji with supposedly expert CoO still cannot see the future, something that Luffy and Katakuri can do. So I hope this will be his next power-up!