While the signings so far might not be the major 'clear out and replace" style revolution that some might see as a requirement for next season, it is perhaps worth looking at the situation as a whole before discounting it completely.
For a start, Wimmer has a background in coaching rather than management, so the whole buying and selling aspect is probably new to him, and an unknown. If he believes that there is a good chance that he can improve the players and performances of current players individually and the team collectively through coaching, then he needs to be given a chance to do it. I think it is fair to say that most of the players have, for whatever reason, underperformed this season. It must be within Wimmers remit to try and get more out of them as there is undoubtedly some quality there.
It also should not be forgotten that all players can improve and that a change in environment brought about by new people at the helm and revised tactics and ideas can work wonders on some individuals. I sometimes despair at the speed with which certain players are simply written off as not up to the required standard after one or two games. If Wimmer has the vision to see us getting more out of players already on our books, then perhaps it should be seen as being less of a gamble than trying to replace them from the limited market that we operate within. He will need time, patience and the support of our fans while he attempts this. I hope he gets it.
That is not to say that I am against some comings and goings within the squad. He inherited a bloated and unbalanced group of players, caused at least partly by a horrendous run of injuries. Once the loanees are returned to their parent clubs and the out of contract players head off to pastures new, I will get as excited as anyone over the possibilities that new faces will bring. Give them, and Wimmer, a decent chance and let's see where we end up.