Another way to think of it - DHS had and has only FIVE rides. (Before TSMM it was only 4.The Backlot tour was never really a "ride" per se, it was a guided tour on a tram - so am not counting it.)
Current Rides are:
Toy Story Midway Mania
Great Movie Ride
Star Tours
Rock N Roller Coaster
Tower of Terror
They are adding at least 4 more rides with the expansion.
The Claw/Alien Spin
Slinky Dog Coaster
Millenium Falcon ride
Star Wars Ride #2.
(There may be more unannounced rides as well with further "lands".)
The other major part of the park are the shows. There are currently NINE shows at DHS:
Beauty and The Beast
The Muppets
Indiana Jones
Jedi Training Academy
Lights Motor Action
Voyage of the Little Mermaid
Fantasmic
Disney Junior on Stage
Frozen Sing-Along
There are RUMORS around them closing just about ALL of these shows. (Fantasmic and Disney Junior are the only ones I haven't read rumors about, and of course Jedi Training Academy will be changed/moved.) However, NONE of them have been officially said to be closing. It is quite unlikely that they would remove SIX shows (or even FOUR shows) and not replace at least SOME of them. Certainly if both stunt shows go, we will get at least one new one.
You have to remember what was said about DHS at
D23 and expect to continue to hear it said - "we are moving from a park that's about the making of movies to a park that let's you become PART of the movie." So, right now the stuff that's definitely going to stay (RnRC, ToT, GMR, Theatre of the Stars, Sunset Boulevard...Fantasmic) will likely become part of a "Hollywoodland" themed area. Then you have a Toy Story Theme area, then a Star Wars theme area. Does anyone really think a park like this will only have THREE themed areas? I think you are likely to see something like "Islands of Adventure" eventually take over the park. Where there will be probably 4-6 different themed areas, each one devoted to an immersive theme. The master plan has yet to be announced, that doesn't mean there isn't one.