A few things I hope to see in the not to distant future...
- smart albums
- find photos not in an album, via a smart album most likely
- blue sync complete dots too overpowering in square grid view, just show the sync not finished icon then go away
- custom sort order for folders and albums in sidebar
- ability to search on any part of file name. currently must include beginning characters
- text overlays and badges (has edits applied for example)
- when rating, flagging, etc. of a stack, all contents tagged as well, not just cover image
- temporary trash, 30 days or whatever
- auto stacking based on short time interval, useful when exposure bracketing
- map view for geo tagged photos, ability to add geo locations photos on map as well
- segment all photos view somehow, by month maybe
- zoom less then full screen. 50% or whatever
- HDR merge and pano stitching
- ability to send more then one photo at a time to Photoshop so HDR or stitching can be done there
- raw + jpg workflow
- list view of photos with columns of metadata
- uploads sucking all bandwidth, throttle somehow