Other than better light filters, the models look better overall.
This won't affect Millennium Prodoucts since that series is nearing the end. But for thr upcoming HypnoWho title, I will want to see if I can use the new engine will result in a better / more appealing product. There's also this problem I've been having with the current AI Shoujo studio where I can't find a "good enough" office to set some of the scenes - Room Girl looking like an OL-setting game might solve this right out of the box... so it's very likely the first few chapters of HypnoWho might be delayed a bit while I try out the new Studio and string along updates while I wait for mods to catch up.
I'll try to bridge this nicely so that viewers still get weekly updates, so here's hoping no disruption is experienced...