You can enjoy it, but you’re insane if you don’t see a marked drop in quality from installation to installation in terms of map design, content, sound design and more. How many times are they going to reuse Mega Evolution with a new coat of paint instead of just keeping it already working?
Why do they prevent you from transferring Pokemon into newer generations? It’s not because they don’t have the space for the information. They’re saving money by not having to spend dev hours remodeling all the older Pokemon to fit the new art style or graphic threshold.
All in all, given the profits, they could put a lot more effort into making the experience more fun.
Here’s a decent breakdown of the issues between generations: (Warning: The presentation leaves something to be desired but the crux of the argument is sound.)
If you’re housed I’ll trade you my current situation so you can test that for yourself.