It will use the spectrum of CBeebies but won't be on 202. I imagine they will get a much better LCN for it on all the various platforms.
If it gets the spectrum of CBeebies, where does BBC4 go?
More importantly, if one of BBC 3 and BBC 4 is getting shifted to start at 9pm, where is Eurovision going to go?
Whichever starts at 7 presumably.