Ive always felt like Pokemon has always kept their production vaules relatively low and gameplay changes minuscule so that when there is a slight bump in presentation, or they add one new mechanic for that generation, it seems impressive to their fanbase.
"Wow! With Z-Moves you now have a total of 5 Moves!" Great, now join every other JRPG since 1993.
Like these games arent bad, they are not bad at all. I enjoyed my time with Moon, but goddamn these games are derivative, and other games in its sub-genre of collect em all monster RPG's (SMT, Yokai Watch) are doing so much more with concept, it just makes Pokemon look old and antiquated in comparison.