THe warm up sets can be varied with buzzing. For advanced players I have given them a WW book to play some of the scale/chromatic patterns.
With the scale pages: the holy SR keys are done regularly and we eventually play through everything back to back to build endurance.
I think the important thing is that everything you play has to have a purpose and your students need to understand that purpose. Too many students and teacher just go through the warm up without feedback or assessment. Ask students plenty of listening questions: who sounds different? how? what can they do to improve on that?
Hope this helps.