Depends what you mean by 'current team'.I actually agree with a lot of what you say and agree about RDZ driving the club forward.
What I would counter with though is the run of form that had us fourth was a continuation from the previous season when we won away at Spurs, Arsenal, Wolves, spanked Man United etc. So there is evidence to say it MAY have continued, Could Potter get us sixth with that team I think he could. Could he with the current team, no, but then neither could RDZ.
Is it the side that started the season where only one of Joao Pedro or Enciso could find a spot at 10 and the only fill in was Milner, or the team that finished the season:
Steele
Moder Webster Igor Barco
Baleba Gross
Adingra Lallana Pedro
Welbeck.
Only Gross, Pedro and Welbeck get in our best team as starters.
Whoever the new manager is, that's his start point.