Have you reached the final prize for Springfield Heights?

I paused my work in Springfield Heights. I have 10 of each Condo, Business Center, Parkade, etc. However, I have them all at levels 1-2-3-4-5. This is, unless/until EA allows us to change the appearance/skin of the buildings. If/when that change is implemented, I will resume upgrading those buildings.

Besides, Springfield Heights is a permanent expansion with no time limit. There's no rush for completion, especially when other limited-time events come up.