Pacioretty is injury plagued and only has one year left on his contract. He’s also not an asset on the powerplay and is nothing special defensively.
If you think that upgrading your proposal to Bellows and now a 2nd is an overpay......
You kind of are all over the place and I think you are missing some key points.
1. Isles don't need forwards they need defenseman preferably LD.
2. Chicago needs much more coming back as they have no need for Brossoit and Dadanov.
3. Dadanov and Bross have zero value as there are better options available via FA. Vegas is going to pay to shed them and the total cost is probably more than patches and you arent getting kubalik on top of it.
4. Vegas is going to try and compete next year so trading patches is probably not going to be their go to.
5. The only assets Chicago is getting is from the isles who really have no need for more forwards so they probably say no.
Ignoring need and salary cap Patches for bellows and a 3rd or 4th pick probably benefits the isles value wise but again they have no need for Patches. Upgrading that to a 2nd isn't going to happen. I am also not very high on Bellows as some Isles fans might be. I watched a lot of Isles games this year and I felt Trotz didn't play kids as much as he should. Maybe Lane will play them more and his value will increase....maybe.
Either way I think the teams and pieces you are proposing just dont work.