Its fine by me, but one thing I would comment on is as we all know some WU's are longer than others, and the newer Aids ones in particular seem to be longer. Therefore those using Boinc are going to be at an advantage, as at present they can only do the generally smaller Cancer ones ( I know its not always the case )
Also if you have 2 people with ident rigs, and one crunches 5 small WU's in a day, and the other 1 long one, then they will both get the same points, but one gains more WU's for the same effort - would that be fair?
The other side of the coin is that it is the completion of the Work Units that is the important thing, as it is what will help find a cure - points do nothing to contribute.