Endgame Duel idea

I have been thinking about what the best ways are to improve at chess and also how can we maximize the time spent studying... 

I know tactics, openings, general strategy and turning your thought process into words are really good ways to improve; while these are vital to improving I believe one of the biggest ways to quickly improve your thought process and closing out games is most definitely Endgames. 

With that being said I know that studying endgames can be tedious, monotonous, and boring. 

My big idea (good chance its already out there to some capacity) is to have some sort of website or app that is an Endgame library of mostly basic endgame position scenarios. For those of you who study endgames on chessable or here on Chess.com probably have noticed the soft fail moves (on Chessable) or the noncomplex way/computer moves that the computer uses and to me it feels that for these reasons it falls short of true endgame play against humans. 

So who would be interested in some type of website that pairs you and another player together with an endgame position? One person has the winning side and must prove the win while the other player tries to complicate it as much as possible. Then after that is over players will switch sides. Drawn endgames would be included as well but you would have to prove the draw... 

Anyways is there any type of public interest in this, or critiques, etc...?