Well, I don't think they should have stopped, but I do think that the graphics should have been kept the same as they were on ruby/sapphire. The new graphics seem to me to be trying too hard, and just slow down the actual gameplay.
It's frustrating really. If they could make a DS version with the same style as ruby/sapphire graphics then I would not hesitate to get it. The games would be far better if they stopped caring so much about making everything look somehow more realistic, or whatever they're aiming for.
Aside from that, I like the new innovations. EVs and IVs are somewhat beyond me, but that's all. Everything else is good in my opinion.