Good catch on the no-fetches, I missed that part. I can see that the deck thinning (miniscule difference in draws) isn't necessary and there can be perfect mana without them. Scrying with Serum Visions sometimes gets awkward with fetches. I don't think the deck can handle the scry lands like Ad Nauseam, but the thought has crossed my mind.

I still like Remand, but I don't like 4 copies. I think Remand actually gets better if there is 3 Grapeshots main, making it so I don't have to lean on Gifts so hard for the kill. I'll probably stick to 3/3 of Remand/Grapeshot (and this is a spot where Peer through Depths shines, because it can further the storm chain for only U, again without needing PiF or Gifts.)