The entire concept of the main character being on a completely different continent to 95% of the female cast was pretty idiotic.
It makes sense for them to be away on vacation they are on their honeymoon after all. It's reasonable. I think that it could have worked rather well if it was only done temporarily. The problem was that the honey moon portion of the game was dragged out for too long. In 0.7 it's not even like "We gotta head back tomorrow...". So it would have dragged out even longer. If by around 0.4 or 0.5 it was time to head home from that honeymoon it would have worked out great at the pace it was going I figure they would probably have been on the island at least a few more updates.
At some point in there they needed to either
1) Have the mom / sister ect come to the island too
2) Leave the island
To me it would have been better if there almost no contact with the family characters after getting on the island. Those hugs goodbye at the start, and maybe a little video call one time would have been the right amount. However, they shift over to making them secondary protagonists follow them around get to know them and build them up.
It could have played out well eventually, and I think it would have had the game continued, but in an incomplete state it's left at an awkward phase.