i am answering a bit late... but i do appreciate your answer though. i'll test the large embedded preview and let you know if it works.
what does phocus lack compared to LR. my 2 cents based on my workflow.
mainly the DAM part. i use lightroom for DAM, raw processing, and others. phocus is only raw processing, and that is understable. so comparing apples with apples (raw and raw).
LR better than phocus in (raw processing only):
-history of corrections.
-intuitive, fast and easy presets.
-preview of presets adjustment prior to selection
-virtual copies and snapshots
-ability to scroll the tool column (2 fingers in the trackpad and you move down... clicking on phocus arrows is really annoying)
-additional adjustments (brushes, spot correction, clarity)
again, my humble opinion only
i am positive phocus as a better raw engine, plus all the magic. but sometime and for some clients the magic is in other things (delivering fast).
LR is now incorporating camera profiles. i am positive it is a step towards integrating with manufacturers own softwares. maybe hasselblad can look into it. color rendition would be closer. lens correction might not be possible. but the ability to look at a raw file 6 months later and still change it is really nice. and it is lost if you finalize everything in tiffs. so export to DNG is the only solution for long term, which make you loose things, as the dng is not reverse compatible in phocus. so the choice at the end of a shoot is either to keep duplicate files, transfer to DNG and loose info, or keep 3f and loose DAM (no way i am going back to microsoft expression media... old IVMP was already nightmarish at times...))
again, my 2 cents, wish list, dreams of someone doing developing at 1130pm and trying to figure out where are the hassy files and the nikons one...
Check in the Phocus preferences that you have set embedded preview size to 'Large' that can help some customers.
If you do export to DNG you will lose a great deal of image quality. No lens corrections, poor performance at higher ISO and generally less accurate colours. What do you feel you are missing in Phocus?