Yeah rogue, banning is not the solution. As soon as you ban either or both the cards, something else will pop up. Do you ask for another ban then???
What I think is, maybe introduce new cards as future additions to help other clans/decks against them. Or do what I do...next opponent please!
I think banning that combo is also not suitable. The two cards you mentioned are from Sakrohm. Combine them with any other cards from any clan and you'll have a good deck, especially with another clan with high power and damage. So what you are really saying is ban Sakrohm. That is my opinion though. LOL I do admit their abilities and bonuses make them strong, so nullify them.