oh. i thought wsdl refactoring was already part of 1.7.5. Text editor works fine for me at the moment when the wsdl change is very minor. I obviously dont know about development as much as you but I think have somewhat of an idea about a possible solution.
Lets say the WSDL for some service changed and one of the method's (addtoCart()) request object changed and now the issue is that I I have called this method hundreds of times across many testcases.
If I update the interface I can see the new method definition. So if I can say that replace all occurences of 'addtoCart' with the new definition (across suites, projects etc). This would be ok with me. I understand that doing this wil have possible side effects like property transfer failures and possibly some others issues.