I wonder if every Haruka that shows up is going to fall for this Konata, while Haruka Prime has to deal with all her alterate versions each try to take "her" Konata for herself.
Especially if they all show up in this universe--because ostensibly, they all have their own versions of Konata that they would have left behind, like Gyaruka here. So immediately switching over to Konata Prime is just causing issues for Haruka Prime, in that case.
Betting it'll also follow the usual harem logic of the ML being feckless and noncommittal in who he actually prioritizes, in the name of both "group harmony" and also because harem stories fall apart the moment one is actually at the forefront. And we've already seen that the Primes are absolutely shuttered on expressing their true feelings toward one another.
I guess it's got potential, but this could easily be interpreted as Haruka self-NTRing 7x over, if the author's not careful, and that leads to the sort of melodrama that can get old fast...or simply not be treated with the proper amount of narrative import, making it all feel superficial.
Time will tell.