Sure you heard, but Paine's finger didn't heal properly and he is out for another 3-4 months.
Without his keeping, Paine wouldn't make it in the team as a batsman, as there are far better options out there.
Wade is the clear choice. He is solid, averaging 40.16 over his career, and isn't overly aggressive, as his strike rate of 49.57 shows. I'm sure the selectors probably don't want to bring another new player to the team, but when Haddin is dropping catches, not scoring any runs, and unsure of himself (doesn't know whether to play naturally and attack, or be patient) there is absolutely no advantage keeping him in the team. Would be much better off bringing in Wade now, and giving him time to develop prior to the next ashes series.
Wade has scored 316 in 6 innings at 63.20 this year, so I am at a loss as to why they presist with Haddin who isn't performing, and worse still, isn't sure of himself. I know stats aren't everything, but in this case I think they are important, as Haddin isn't offering anything to the team atm.