Yes, I'm still working on this project. Practically all of the level models are done, I now need to add all the stars, enemies etc.
The above screenshots show:
Completed Ricco Harbour Sewers, Casino Upper with Pianta, Updated and completed 'Hillside Cave' level by GBAtemp user '†Nømura', Almost complete Delfino Airstrip, Practically completed Pachinko Game, Updated and completed 'Rainbow Tunnel' by '†Nømura', Practically complete Casino Lower, Updated model for Gelato Beach, Updated model for Noki Bay
All the level models previously shown have been updated and now look much better, though only two are shown above.
I've made a tutorial that shows how I replaced the Pianta model:
The latest version of SM64DSe is always available
here.