Personally I think these are great changes to improve reliability, as X30/X31 users were really suffering. 

I also like the increase PVR in the 78, however there is an issue with the 78 PDF, it says the 78's sunday service is Saturdays.

Honestly I don't know how extending the 16 to Shotley Bridge is going to increase reliability V it going to Hownsgill, same with the X5|X15 the routes still an hour end to end like it was before the changes.