Once Smith resumes captaincy after this series there is no way Paine will be in the side. Either Wade or Carey, both who are superior batsmen than Paine, will takeover wicket keeping. Whether both would play in the side will depend on Wade's performances in the upcoming tests, if he makes runs he will get the nod over Carey.
In the current side I would rate only Head 6.5/10 and Smith 9.5/10, none of the rest more than 4/10 , the bowlers are carrying the team. If Labuschagne can follow up his batting at Lords in the next test he could easily step up to the other two, but he is still unproven.
By next summer the batting line up will be nothing like that it is presently in England