Loki Eliot has a post up about his experience with mesh: Materials Post Mortem. It is a good article. You can visit the region named Escapades to see what things Loki has built.

Loki is pointing out some of the problems when trying to build for ALM-Enabled people and ALM-Disabled people. (ALM = Advanced Lighting Model) I think it becomes clear builders are having to decide if they will build for ALM-D or ALM-E. Building for both degrades both.