Star Tours, TOT, RNRC, TSMM, and GMR are all very good D/E tickets, a few of the shows like Muppets, Fantasmic, and IJSS are outdated, but still fun to do every once in a while, and Hollywood Boulevard and Sunset Boulevard are superbly themed. But the problem is... that's it. The rest of the shows are both very outdated and not that great, Echo Lake/SoA/Pixar Place/"Animation" Courtyard are thematic messes, and there's not any rides to do that aren't a D/E ticket.
Luckily, some of those are being fixed. TSL will see the end of Pixar Place, SWL will see the end of Echo Lake (Sort of... presumably the lake still may be there, but not as a dedicated area as ST and ISJJ will be gone, and the lake will probably be absorbed into Hollywood Boulevard.), and Phase 3 will see the end of SoA. Toy Story Land and possibly the Phase 3 land will give the park some much needed B-C tickets and flat rides. Most of the shows seem to be marked for replacements, updates, or removal quiet soon. While the next five years are definately going to be painful, DHS is going to be a good park by WDW's 50th anniversary for sure.