> Jit for emu

Which emu do you mean? MorphOS' integrated m68k emu has a JIT called Trance that's activated by default. And E-UAE for MorphOS has been released with JIT recently.

> 3D support for all 2D supported video cards

I don't think using resources for implementing 3D support for ancient SiS, XGI or 3DLABS cards would be worthwhile. And even TinyGL support for Goa3D-supported 3dfx cards is debatable in my opinion.

> at least for the ATI cards

Do you mean the Rage128 Pro here? While there are MorphOS-supported Macs that originally came with this card, it only has 16 MiB VRAM, which is way too little for even semi-serious 3D use today.
In case you mean TinyGL support for the Goa3D-supported Radeon 7x00 (R100) cards, which go up to 64 MiB VRAM (while in stock cards for Macs only up to 32 MiB), this would be nice indeed, especially given that they already had TinyGL support in pre-3.0 MorphOS with the old Rave3D-based tinygl.library.