Comment
Suspect this is very hardwate dependent. On units I have the NOTAM shading does not make it difficult to see other things. Also if you are flying a given route and the planning has been done OK, then I rarely look at the 2d map features .. just ensure I am flying the track and also that I am out of controlled airspace vertically unless I have ATC permission.
Conversely when bimbling around locally then the visual NOTAM warnings are very useful indeed .. and here I have been taken by suprprise. At the same time because I am bimbling, I am fairly aware of the locality and looking at the map does not happen much!
Conclusion
For me please keep it the way it is and for those who really want to suppress NOTAMS, let them go through the process above.
Cheers
D