Btw, there ARE more than 9 total experiences in DHS (without M&G's) but I think the number is misleading.
Rides:
Star Tours
Toy Story Mania
The Twilight Zone Tower of Terror
Rock 'n' Roller Coaster
The Great Movie Ride
Shows:
Indiana Jones Epic Stunt
Beauty and the Beast
Frozen Sing-Along
Disney Junior - Live on Stage!
Jedi Training
Voyage of the Little Mermaid
Muppet*Vision 3D
Nighttime Spectacular:
Fantasmic!
Star Wars A Galactic Spectacular
There are enough Shows (7) and Nighttime Spectaculars (2) to chose from. Some of them definitely need some love but quantity is there. Rides however are completely different story. There are exactly 5 of them and when GMR closes it will be exactly 4! And 2 of those are thrill rides (ToT and RnRC) which will not appeal to every guest (myself included - I like certain types of thrill rides and unfortunately these two do not belong to that category). So some people will be literally left with 2 rides: Star Tours and TSM!
I am not convinced that even all of the announced stuff will fully fix the problem: 2 rides in TSL, 2 rides in SWE and GMR replacement. That brings total to 7 non-thrill rides (or 9 when including ToT and RnRC). Technically just the right number, reality is that is still too low. Problem being again that there is no choice - you still have to do every single ride in order to get to that magic number.