I'm going to be pissed if we get a Breath of the Wild rep as one of the next two Smash fighters and it's Zelda instead of onr of the Champions because we don't need a 3rd version if Zelda. Plus, if Impa loses to any other Zelda character, I would want it to be one of the Champions, Skull Kid or Pig Ganon if that was possible.
I agree with you here. BotW Zelda can be DLC, sure, but rather as a free Echo of Zelda, using the Down B of BotW Link. And why not the old Light Arrow Final Smash. I much rather have a Champion as a separate newcomer than Zelda. I have no strong preference even which Champion has to be chosen, could live with them all.
Speaking of, Breath of the Wild actually did release around a similar timeframe as Xenoblade 2 and ARMS... It's entirely possible a Zelda newcomer was already planned around Breath of the Wild, but they didn't prioritize it.
If Ultimate would've gotten newcomers the same way Smash 4 did, a Champion would very likely have been chosen as a newcomer am sure.
EDIT: What if they'd gone crazy, and after the Pyra & Mythra reveal they release a combined character of BotW Zelda and Young Impa, BotW Zelda as a direct Echo to Zelda, with Link's Bombs. And Impa a semi clone of Sheik, with a kodachi short sword. Down B would be switching like PT and PM do it.
What would your reaction be?