I hate to labour a point BZ but when you say "should Ricki go?" do you mean go from the head coach role, or go from the club completely? If you mean go from the head coach role then I'd probably say "yes", unless something really outstanding happens in the next six weeks. If you mean go from the club completely then I'm not so sure. He still has a wealth of experience and there are a number of possibilities for how that could be put to good use. DoF? Part-time DoF? GM? Consultant? Board member? It really comes down to what Welnix want the back office to look like and whether they think Ricki has something they need.
Edit: I could even be swayed by JV's point about the assistants. It would need to be a big change but, for example, if the club announced tomorrow that they were bringing in Luciano Trani and Raul Blanco to work alongside Ricki next season I could probably live with something like that.