I will give Pixel Piracy + Bloop + Murder Miners + Hyper Fighters + iBomber attack for Diablo 3

I think Mad4Cookies is probably signalling to you that the deal you're offering is a very bad one, and nobody is going to be interested in taking it. You are offering several cheep bundle games for a costly game that has never been in a bundle. People are not going to be interested. Diablo 3 is worth way more.

Now, you can offer whatever deals you like. But if you offer deals like this you may get some sarcastic comments.

No problem. As a general rule, games that were in bundles are considered to be worth a lot less than ones that weren't. Bundle games are often worth somewhat more if you had to pay more to get them or if a lot of people want that particular game. But, in general, you can only trade bundle games for other bundle games.