I'm guessing around 300 max, because those that would've had tens or even 100+ of nodes with the old 1000DRK=1MN system will now just have 1.
That said, could someone please tell me why the multi-ticket masternodes was a good idea again?
It is easier to update and secure one big MNs than 20 smaller ones. As long as the total number doesn't go down a lot it doesn't affect decentralization that much. Anyway, afaik, it has been pushed back to RC4. This should happen in July, so there is a lot of time for this to change.
Even so - it might be limited to a maximum of 2-3 tickets per masternode so you cant have 20,000 drk / 20 tickets in one MN.
Still too far away to be anything to worry about for now.