If Reboot is lagging, every world lags. All the Worlds are hosted on a single support server.
But they do need to add a Reboot World to the EU side so the EU players in ours will go to theirs which would give them better latency too. We're also missing "Reboot 2" and Channels 21~30. Those won't help much since all the worlds are connected together on a single server.
While the additional channels were temporary, they need to be permanent for us, it would help with finding an empty PQ too.