There effectively is no LO anymore, everything is LB(even if you set it to LO), there is no gain from using LO anymore, even on larger systems, so we removed the functionality.
If they have an existing system, I would tell you to go and look at the Max System Stats to see the peak concurrent outbound calls their system has handled in the last 30 days, this would be a good indication of how many licenses you would need for CPD.
If you would really need 2000 licenses, then there are options for a bulk discount, just contact
sales@vicidial.com to get the quote process started.