a bit off topic but since we're talking about eras of Imagineering: I noticed that every generation of Imagineering has had its own unique flair to it.
The early greats of Imagineering (HM, SSE, Horizons, POTC, SM, etc) Had a very nostalgic but whimsical tone to them with highly populated sets and simple but effective techniques (Ex: Peppers Ghost). The Eisner era Imagineering (TOT, TT 1.0, ST, IJA, CTX, SM, etc) were more story based and focused on the thrill aspect, while maintaining that "Disney difference" with their innovation. Modern day Imagineering really likes to create immersive attractions and lands based on popular movies, with new and innovative tech being implemented into these projects, which make them feel very shiny. While being ambitious with what they want to do, most of their projects tend to get scaled back (Budget cuts?).
Its something I noticed and why I love having rides from different eras of Imagineering in the parks together. They create a blend of old and new that gives each ride their own uniqueness to them.