>>58773616You know this is actually a really cool concept. With how much they have been using Rotom since Gen VII, I am surprised they haven't done either this or just made more Rotom forms.
Like I can easily see them turning Rotom into the next Eevee as a side-mascot and add a bunch of new forms for new type combos, yet they haven't.
Maybe give Rotom a new signature move that changes type depending on its secondary type from whatever form its in.
Then with Mega Rotom, make a new ability that changes its Ghost typing to Fire, Ice, Grass, Water, or Flying during battle. The signature move would then change based on that secondary typing.
I am thinking something like a mix of Protean and Color Change. Shifts type if one of the five would resist an attack and/or if you use the signature move and one of the five would hit super-effectively.