I'm not writing Potter off, tbh I haven't seen enough from him to suggest that he'd be a success or a failure but one area I think Spurs would be looking at of his is Brighton's draws this season, joint highest with Palace.
From Spurs' perspective though they have two of the best forwards in the league and now what looks like a really good acquisition in Kulusevski. They're not winning the league atm but I don't think they're far off of challenging in the latter rounds of the Champions League, making FA Cup finals and in general putting in respectable point tallies in the league behind Liverpool and City.
Spurs right now aren't in the position they were when Poch first came through, so bringing someone like Potter in who is similar to Poch back I don't think is the right idea.
Where they'll get a manager from who knows, but I think the best thing for them at the moment is to hold onto Conte for as long as possible because I don't see Harry Kane ever changing his mind about staying at Spurs with Graham Potter in charge.