Mad because you want Lex to kill Lionel more appropriately, or mad because you love Lionel?

A bit of both. Lionel deserves a more spectacular death than that, whether or not Lex kills him. But I do love Lionel, bastardly or not. Although like a lot of folks, I'm not fully understanding how he's supposedly 'redeemed' now. Not that he couldn't be redeemed, but it certainly shouldn't be this sudden.