The point is that it could of definitely been done better design wise...the obvious first way to do so is to make it less intrusive but honestly even keeping the access the same, one could have done better. It looks like an afterthought, one that didn't even attempt grace and elegance and thats the problem.
Any design element is far more effective when it is a part of a larger aesthetic. In other words, you can do whatever you wish but to make it really look like you meant it, you have to create more than just that feature and plug it into an otherwise standard form. So to both of you in regards to the rosette, I totally agree with you and would have advocated doing something just like that. Honestly this design overall is not exactly to my personal taste but it's certainly something I can see that there's been some thought behind and thats what counts.
There is a famous steel string builder who's decorative work is really amazing in terms of design and execution but every guitar of his I've seen has what looks like a store bought mosaic rosette, which is totally out of place not only on a steel string but one that is so heavily and otherwise uniquely decorated. It's just a major design mistake IMO. Of course he is doing just fine so its not like everyone shares my opinion