Some great suggestions! 

I agree with the 25 needing upgrading as they are always quite busy even outside peak times. When they had the 1 going to Wrekenton they were never busy but since changing to the 25 it's definitely seen an increase in passengers even tho the buses have been downgraded... 

Since getting the streetlites on the X66 I have always thought they were never suitable for it as there is never enough room. The only thing they have done is made the service more reliable which is a good thing but its bad points. 

One service which you did not mention but really needs some upgrade is the Q1/2. Great service and very well used but the buses have always been a let down, need to see some streetlites or Mercs put on them.