I’ll play….
1. 1-2 new rides every other year. This can sometimes be a replacement but should mostly be new/additional builds.
2. A new land or at least a bunch of rides (3+) every other year. This is the “big splash” stuff
3. A new large show or parade every other year.
4. Regular changing out of shows, films, etc every 5 years or so (maybe 8 years at the longest)
This is roughly would I would expect to do. Every year should have “something” new and at least every other year should be something quite large. And stuff doesn’t have to be one individual park each year but if it is on average then each park would get something new at least every 4 years or so at minimum.
There should be walls up somewhere pretty much always. Constant state of improvement. If you are always building stuff, you won’t run into the “people holding off on vacations to see the new thing” concept because there is always something new.
I actually don’t think the last 10 years or so we’re off much from what I’m suggesting though it has been too much “replacement” and not enough “additions”
definitely wasn't, as your figures would mean in a 10 year period 3 new lands, 5+ new rides, 5 new shows/parades,
over the last 10 years we got:
- 3 new lands (Pandora, Galaxy's Edge, Toy Story Land)
- 6 new or redone attractions (Cosmic Rewind, Remy, Tron, MMRR, Frozen Ever After, Journey of Water)
- 7+ new shows (Festival of Fantasy, Harmonius, Happily Ever After, Enchantment, Rivers of Light, Star Wars: A Galactic Spectacular, EPCOT Forever, plus the SSE Beacon of Magic shows)
Plus Disney Springs, Skyliner, new hotels/DVC, etc.
Maybe not the right stuff but about in line with the amount of stuff you would want