The new server numbers are due to MCGamer V2's "dynamic servers" system. It uses every server on the network for everything, in easy terms. Let's say that if an SG server was free, and the hubs needed another, then that SG server would go become a hub server. It's a way of efficiently managing the servers on the network, and this is why you're seeing such high server numbers.
I hope I answered your question, and if you need anymore help, feel free to PM me.
QA;TL