What exactly do people want in a duo champion?
I see players complain about how Kindred and Quinn don't fulfill the duo fantasy. I like how Kindred is in game, but that's because I don't seem to want what other players want. I've even seen people say that Kayn is a better duo champion. So what do people have in mind?
Do people want someone like Cho'Gall, from Heroes of the Storm? Two players play one character, with one moving while the other attacks. That might be possible in game, but I can only see that happening for the bot lane, and with voice chat.
Would players rather have one person control two characters? Similar with summoned ultimates, but maybe you use either the item slots or alt-q/w/e/r to use their abilities?
Maybe the simplest way is to have a champion like Elise, where you can transform, but instead you swap places and use entirely different abilities? Like a tag team fighting game, you can swap, but don't regain health unless you're playing the character?