I do like Inferno modes. Never done Trials before. But to add another element, why not add it to Trials? Add it in as Trials Inferno and still have the regular one? So you can choose which more you want. Or add it to one of the rounds in Trials. There isn't an easy solution, but I do however think their best bet would to add it as Inferno Trials and still have the regular one and see how it goes. If people really enjoy it or not. Sorry for my bad English. It's my 6th language.