You need about 2 more 1sts of value for it to be fair.....

Chychrun is a good player, he's probably even very good, but saying he's worth three 1sts + Sandin + other picks, prospects, and players is also ridiculous. When was the last time that many assets were given up for one player, let alone a player who isn't like a "best-of-the-best" kind of player.

Kerfoot Holl and Ovi guy equivalate to the value of a 3rd rounder. So yes, 2 1sts of value are needed

Right but you're still saying that Chychrun is worth three 1sts + Sandin + two 3rds. That's a ridiculous overpay for a guy who is good but not top-tier defenseman. He's not a Makar/McAvoy/Fox/etc, and he's not a player the Leafs particularly need.