It's not really a problem in our books.
Yes it's a technically a harem, but you'll have to live with the consequences of your own choices.
Now, I don't mean to say that there are consequences in the game that prevent you from having someone... No (
Boomatica already mentioned a couple times on this thread himself that there will be no wrong choices)
There will be no fallout, except for your own guilt.
Each character is being created by the team to be her own individual, with her own story and own "quest"
It's not about corrupting them and getting them all together at once, it's about living and loving with them as individuals.
We have many players that actually use multiple fresh saves to experience each route individually, because of said bad feeling if they cheat around.
But also plenty of players who just go around and treat it as a harem game and "gotta catch them all"
So, in short?
We don't address it because we believe that THAT emotional attachment to characters is one of the strengths of Private Community. (besides the incredible art, animations and many other stuff)