Yes, I contributed about 421 meshe fixes for IA 7.1. Mostly quality improvements like this or that. But also a lot of collision fixes. In IA 7.1 all shields have fitting collision depending on their shape -> Comparison. Yep, but it has the problem that it exchanges vanilla shader on objects BDS avoids to touch, because the textured shader can't be displayed on them. If you don't care about objects with missing snow layer, use it. Otherwise I would recommend to stick with BDS.