Bambi Bubbles
Long lamented on the SL forums, and anyplace SL users congregate, "the death of collaborative inworld building' is seen as a major social issue for many creatives and collaborative efforts.
Reducing the inherent 'land impact' of the 'basic-building-blocks-of-sl' would make prim-building more of a viable activity, both as a social/collaborative outlet in sandboxes and limited impact private builds, but also as a path toward helping new users function in the user-generated-content economy.
A reasonably modeled and textured prim-built end-table will often have many fewer vertices than an imported mesh counterpart, yet through trickery of LOD generation and physics models, the uploaded mesh can achieve land impacts that make the prim-built version completely non-viable in most cases.
Reducing the land impact of primitives also has the upshot of encouraging simple lighting, the placing of more reflection probes, and so on.. which our shared world desperately needs to encourage in a 2026 version of SL, with more and more PBR avatars' butts reflecting the blue sky outside.