Don't change for the sake of change, too many of us have changed and regretted it, there is threads on people regretting getting rid of bikes, if on the other hand you have a genuine important reason to change then change but I suspect like many the reasons are unimportant or you are exaggerating the reasons to encourage a push to change, my worst change was mv Agusta f4 evo 2 for a 749, then a 954 blade for the 2004 underseat pipe model, only do it if you are 100% sure, but having said that if you are asking on here you are not.