3D may come but is not a high priority.
Sound will come as soon as I can get around playing some sound on my 3DS. That's the main issue, really. Because otherwise I have functional DSP code from lolSnes waiting to be ported.
Video is in the process of being optimized. For one, PICA200 rendering is asynchronous and I need to modify my code to take advantage of that, instead of just doing nothing while the PICA200 is rendering.
Overall emulator usability is also essential. In this regard, the issues that plagued blargSnes 1.0 will be gone in 1.1. After some fixes, returning to the home menu, closing the 3DS and all that, work correctly. No more garbled/blank screens. Oh and it's also possible to exit the emulator without pausing it first.
I plan on releasing 1.1 somewhat soon. I want to get the new video code clean and fast first.