Huh the spider scares me XD Where have you seen it was electric? I can't wait to see the types, moveset and stats! We can always be surprise.
I would have like more alola forms and overall I don' really love them (not that I totally dislike them), except Marowak. Not only it is my favorite pokemon ever, but I think the form is really well done! Sadly, cubone didn't got any new form, which is a bit strange..
I think sun and moon will have an interesting story. The ultra beast are... something! I do think they represent some npc.