Regarding the port difficulties- if there is a specific port difficulty you're looking to mine with when multi-algo goes live, please let me know. Port difficulties will most likely need to be adjusted and added to accommodate various mining equipment on the different algos.
-Fuse
OK... so to simplify things, there is now a single vardiff port for each algo, with the minimum difficulty shown. This should be good enough for 80-90% of the miners out there. Anyone that needs a special difficulty set for specific mining hardware, PM me with your requested difficulty, and I'll set a port for you.
-Fuse
Compared to the skein and groestl starting diff, the qubit one seems very high.