That Happy Summer daughter model is cute - sadly, not much else in that game is good, and the pace of development totally blows. DDL doesn't have any grind (so far, fingers crossed), so that's a big plus.
Single Again is a good one - you don't have to play the spinoff at all if you don't want to.
Neko Paradise and Radiant - one of the devs had some real life issues that kept him out of the game (pun intended) for a while. He's fine now, so things should be back on track fairly soon. The sandbox in Neko is one of the least annoying ones I've seen - the hints system is so good you can just look up when the next event is going to happen and simply advance time as needed.
Back to DDL - yes, I would really love the girls to have smaller, perky breasts.
Perhaps the dev is using the large breasts to ensure that the girls don't look too young.
Just looks weird, IMHO.