Haven't bought it yet. Locking Tira behind the season pass and just the whole dlc character thing soured me on day 1 purchasing. Plus black friday/cyber monday is only a month away.
The customization looks amazing, and SC 4 was the last one I enjoyed so I still plan to get it at some point, but as others pointed out, it launched in a crowded timeframe.
As for the Link/guest character for a potential Switch version, I could see Link, Zelda, or some Fire Emblem character being options. And I do see a Switch version being a possibility. Simply put, it would sell. Switch SC6 would be Namco's best selling Nintendo title in well over a decade, unless it takes them over a year or two to release it. At that point people won't probably care as much since the PC, PS4 and Xbox versions with all dlc will be the same price.