(12 Apr 2022, 3:52 pm)L469 YVK wrote 6 and X72 could in theory be changed into the following of they wanted to cut further

6 - as now but hourly and doing the 'old' 6A variation from Burnopfield to Stanley during the evening & on Sundays

6A - X72 route from Stanley to Sunniside then 6 route to Newcastle

X70 - reverted to again serve Tantobie

X71 - revised to serve Lobley Hill to replace X72 (or another service could do that??) 

X30/X31 - Reduced to half hourly (1x every hour each)

PVR reduction depending on timings would be 3x consisting of E400MMC. Technically, that would then make 6x E400MMC available. Presumably, could be used on 47/47A perhaps if something could free up 6336/37 at Riverside?

I'm shocked the X30/1 aren't already half hourly, from what I've seen they rarely get busy. I don't think they really need decker's, however they are nice for the journey.
As for the 6/6A thing I'm surprised that didn't happen either. The X72 doesn't seem the "express" type, and follows the 6 for a bit (I think?)
It probably wouldn't happen, but if it did then they could make it so the 6 was every 20 minutes instead of half hourly, so 2x 6 and 1x 6A per hour.