MasterReigen
Correct There isn't any powerful kryptonians on Arrowverse, but I was thinking the The Flashpoint movie verse Supergirl ( Sasha Calle) Unless you have Barry Allen Super Speed dimension hopping powers ,Oliver Queen ( David) has no way of getting to Earth 38' Supergirl ( Melissa Benoit)yet and much-needed less there being a actual kryptonian on Arrowverse Alternative hasn't yet been explored by Oliver Queen ( David) in his new make shift plans for Starling City.
Well this certainly changes things for Oliver Queen ( David ) oj going forward in the alternative Arrowverse universe. especially since their isn't no big 3 for the future Justice league ( Wonder Woman, Flash,Superman). which means there's a Supergirl ( Sasha Calle)( Flash movie version )out there . Guess we'll see how Oliver Queen adjusting to new life in Starling City and no Justice league to back him up in the future, but I'm sure Oliver Queen ( David) is going to build a very different Justice league ?My best speculation guesses?Continue on Cheers!