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Every gen since gen 2 people bitched about designs when dugtrio, electrode, magneton, and seal were the standards. I'd say if anything gen 5 is the most creative gen with its world building (it really does suite a series reboot well)
Pretty sure transferring was confirmed so nobody was too upset about not seeing a zubat every 2 screens.
Main concern was the story and map itself, the map was really forgettable and linear, and the story was kinda w/e, interesting morale but hard to follow the story behind it. It was also the beginning of pokemon games getting really easy to steamroll through.