Ah, I see. Cool to get your insight. This must be why 90% of SFM and 3D animators pretty much leave them well alone. Still a huge bummer though, I'm hoping someone makes a decent communal rig that most animators can take advantage on. Definitely hoping you spend a good amount of time with the boobs and showcasing their softness.
I think what started this fascination off was this video called 'Tifa Broken Heart':
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, not only is there waterbed boobs physics here there was also over the t-shirt boob physics too which I found quite impressive not to mention they sag which I kinda like. Scourge of Evil guy, unemaro, Dollhouse, Eskoz, and A Third Dimension seem to be on the right direction to mirroring Japanese doujin tiddie drawings. Similar to yours is probably Eskoz:
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when the tiny girl is pushed right into the boob!
Just as feedback, something to consider is to keep involving the boobs too. I've noticed that in most 3D animations once the scene with the boobs is done and moves onto fucking etc that the boobs are almost completely ignored. There's tonnes of potential especially with huge boobs to have them played with while they're hanging or suspending some way. This is why I tend to lean towards tentacle stuff as the boobs usually still get some loving all the way through.
On an unrelated note, you do good work on tiny arousal details, foreskin, dick getting hard, definitely keep that up, maybe do the same with the nipples too? Always awesome.
Keep up the good work.