Probably too much quantity not enough quality. I'd try something along the lines of Leafs 1st, Niemela, and Robertson for those pieces but not sure what offers teams will put in for Horvat.

Too many moving pieces. If you're making a trade, as the GM you have to ask what I want? If you're vancouver do you want prospects or picks? For Horvat any deal should start with a first. After that Vancouver should target some prospects. This looks more like a trades from the leafs side where you need to add a player to get the value right

First you bury Holl just to get Scheen which is a really poor decision. Holl has playing really well with Leafs. Then to trade Minten, a 1st, 2nd and 3rd for Horvfat is overpay by any standards and certainly for position that the Leafs really don't THAT much improvement.

"Scheen" and "Horvfat", that's uncalled for.

I mean I like it, but I'm a Nucks fan. For Horvat and Schenn(no retention), a more in line offer would look like a '23 1st, '23 3rd(TOR), Kerfoot, Topi and Minten

Maybe the best idea would be Leaf and Canucks fan stop trading Schenn to the Leafs (he's not needed) and Horvat to the Leafs (he's not needed). Trade those players to a team that needs a RHD and centre.
But I can't imagine those two players...even in separate deals get the assets back in a trade to the Canucks. Seems like the Leafs have to pay a premium for some reason.