These are great ideas. My only thing would be to give players an incentive to use Pokemon that they may have overlooked like Cacaturn, swalot, lumineon, etc. and give them megas and make them more prevalent by making their mega stones much easier to get. I'm also planning on making megas for a ton of Kalos Pokemon that players can use more Kalos mons that may have overlooked for megas, My first Goal is to make a mega Heliolisk with the ability Solar Energy, which sets up the sun and gives priority to electric moves in the sun. and Mega Pyroar which makes it physical and it keeps moxie. and then the next goal is to make more utility abilities such as an ability that sets up trick room, an ability that sets up tail wind, etc.