While I do like Chrono Trigger, and do recognize its status as a long-standing classic, if I'm being honest, I'd view it more as potentially getting the same treatment as Trials of Mana and Bravely Default: they run a Spirit Board event and call it a day. MAYBE Crono could get a Mii Swordfighter costume, but I'm not sure about a playable character.
As for that job listing, I'm one of several who's hoping it's that long-awaited Switch port of Kid Icarus Uprising.
Well, keep in mind that the series has always been CERO A in Japan (equivalent to ESRB E). The series has only been T and E10+ in the states due to "comedic violence", which America seems to be a bit less tolerant of (this could also explain the American Mii trailers' refusal to acknowledge the franchise that certain costumes come from, something that the Japanese trailers don't avoid). As far as Japan's concerned, CERO's main restriction is sexuality (especially noticeable with Bayonetta, Pyra, and Mythra). In terms of violence, CERO B would probably allow for more gruesome and bloody acts, but I really don't see that fitting with Smash, and staying at A keeps the game fairly accessible to all audiences. Incidentally, it's not as though they don't try to make the game accessible overseas (notice that the series lowered from T to E10+ just as soon as the latter rating was introduced; it really does just come down to an innevitable consequence of the series' reliance on slapstick violence).