My suggestion (if it is possible) is to give players an option to right click and get a "pet/praise/feed" option for their Pokémon, maybe it gives them a temporary xp boost and increases friendship (but you can only do it once a day or something). And to display the current friendship/bond between the player and that pokemon, maybe include a visual affinity meter.
My goal is to make Pixelmon feel more like that most authentic pokemon experience yet, and I just know the pixelmon team could pull it off.
Does anyone agree? Thoughts?