Come up to Seattle and do the dives at Cove 2 and Redondo.
I've made my students plan their multi-level dive based on gas consumption and NDLs and then they are required to Dive Their Plan based on whichever limitation comes first -- gas consumption or NDL (and yes, it is ALWAYS gas consumption). As far as I'm concerned, this can be a very good exercise in situational awareness and being able to actually DIVE a pre-planned profile -- 20 minutes at 60 feet, 15 minutes at 45 feet, etc. all the time watching gas consumption and making sure their planned consumption is matching reality.
It is ALL about planning and execution.
That's how we handle it. We have a couple of sites quite suitable for that. One site that has a submerged structure that provides a nice suite of visual clues for them to follow on their planned depths. As you say, it's an excellent time for them to work on their awareness. If we aren't following the pair directly, we have a CA watching to see and evaluate how they are doing on their profile.
The CD who taught me said to always add "value" to any course and look for the opportunity to expand. "Multi-level and Computer Diving" is an excellent candidate for that.