1. The option to increase rendering resolution for 3D based games. Yeah,yeah I know, BLASPHEMY! and all that and I know it will never happen but I don't care, this is a wish list & some of these games would look awesome running at higher resolutions.
2. Re-introduction of 'in game' per HLSL config saving. It's been a right royal PAIN IN MY ASS not having this feature for the last few years. Emulate 30yr old arcade systems, no problem! but have the ability to save a config file is beyond the ability of all MAME devs? Somethings not quite right there.