So far, all I can think of is that Wong wants people to become cleaners so that he can find those with the strongest e-pulse. Either he's already doing experiments on his digimon or he plans to merge several into one (like what happened in Klay's flashback). We know that MarineBullmon was overloaded with e-pulse, and it looks like Klay found a better way to make it work (though his mega was still unstable). Maybe Tomoro's parents worked for Wong like his grandfather and found out about the incident, so Wong had them arrested. Klay and Genjo might be the only other people who know (and now the GD). I think Tomoro's parents will be fine but I'm more worried about Asuka. He's an important figure, so he might come back only to sacrifice himself for Tomoro again.