GF - normally you make sense, but that is the most horrendous suggestion ever! What about standardisation? What about the fact that, in my experience quite often, the pilot is not well placed to make such decisions and will typically follow the easiest path for when things are run of the mill, and not consider the best overall solution under a variety of circumstances? Pilots are not MMI designers.
No, lock it down I say. Even the 225's ability to display various navaids on any screen, and the ability to select sector, HSI, rose, hover displays is getting close to 1 too many degrees of freedom, and has to be locked down by rigorous SOPs.
If you want what you suggest, I suggest you but a PC flight sim!