Quoted By:
For me:
>Crystal US: Didn't really add much of worth, and cut out the best feature from the Japanese version (Even if it did kinda fail over there). Its not horrible, but I think its unnecessary
>Ruby/Sapphire: Lack of content, games felt rushed as fuck, visuals and font looked god-awful, the new Pokemon were very mixed bag. Emerald saved this generation IMO.
>ORAS: What sucks is I liked some of the changes with the story and they fleshed out some stuff that was lacking, but they didn't really take any of Emerald's improvements, cut out some major sections, and it overall felt like a fan hack of X/Y. They really needed to give ORAS another year or so of development.
>Ultra Sun/Ultra Moon: While Crystal had minimal changes, this is the first one where I felt like the stuff they added made it worse. I liked Sun and Moon, but it had some issues and Ultra did nothing to fix it.
Honorable mentions:
>X/Y: I like X and Y quite a bit, but damn was the games rushed and had a lack of content. I really wish there was a version that fixed some of the shortcomings. Only reason it isn't on the list is giving it some slack with its transition to 3D and the amount of stuff it brought to the series.