Im really not sure about the change of engine and style. Even though the VaM models/scenes often looked crude and not of high quality, the new models look somehow worse to me (probably personal preference). Also, it always is weird to me, that people would make 3D open world sandbox porn games. A lot of them either end up in development hell with just a few small updates per year with next to no story progress, or they just get abandoned. The only ones that come to mind that are somewhat good, are Carnal Instinct (and im saying this as someone who actually dislikes furry stuff, but the speed at which this developed is actually impressive) and Waifu Dreams City (updates almost every week, but the style and content are also not for everyone). Normally i would add Wild Life to that list for its quality, but for me it reached the state of development hell, even though they have a roadmap for a while now.
Anyways, i hope the dev of this wont take ages to produce content for the new version, or this will more or less die as well. At least thats my prediction.