I was just thinking of exactly the same thing just now and looking to emulate more analog (read: simpler) patches on the Virus. Maybe some more vintage style waveforms and filter types would be a great start - also maybe an analog envelope mode (non-linear).
I am not bad at programming but some really good, professionally programmed patches doing MiniMoog emulations for example would be interesting - is there anything like that out there already that I'm missing?