I'll repost some information I shared on track templates over at V.I. Control awhile ago:
Me:
Sonar allows for unlimited "track" templates you can bring into any song... full on setups/effects/routings/instruments/subsmixes/effects sends/prochannel setups/patchpoints/etc...available in 10 seconds (vs. lots of time to set them up) and you can just pull whatever you want into any song... and more as you work on it...no track template limits... saves a HUGE amount of time, preserves total flexibility (as opposed to the 300 track song template approach most use for song orchestrals...)
Can't imagine living without this... Indeed, often while doodling around I'll decide I like bits of a new set up, just flag them, and "viola!"... a new template...1 to a million tracks, doesn't matter... including multi instrument settups... coming up with adequately descriptive names is the hardest part of the process!
Tack: Vastman said:
↑Sonar allows for unlimited "track" templates you can bring into any song... full on setups/effects/routings/instruments/subsmixes/effects sends/prochannel setups/patchpoints/etc.
With Sonar, can you have routing references between templates? For example, say I have a mix template, that sets up a busses for mixing, reverb, etc. And then I have another template for, say, Strings. Can my strings tracks have a send to the reverb bus created by the mix template, and not actually part of the strings template? If so, what happens when you pull in the strings template before the mix template? Does it understand the dependency, or does it ignore the sends that fail to resolve?
Hi, Tack... sorry for the delay... up all night mucking round with OT's new
METROPOLIS ARK 1 and spend all day at work gardening in a semi-oblivious state

As to your question, Sonar's track template system is quite intellegent... For example, I have a couple very different vocal package templates with mains and harmonies and sends to "reverb" and "delay". These effects are full setups with the programs I like to use for my voice... One template routes the Harmony tracks to a submix buss "Harmonies" and the other just routes them to the mains... As long as the busses are labeled the same, it doesn't duplicate them... which ever template you load first creates them and the next template looks to see if they're there...if so, it uses them.I have another template with the addition of a nectar2 harmony set up sending to a "Nectar" buss... in that case it looks for the buss and not seeing it, it creates it. And it automatically uses the verb/delay busses... If you want 2 different delay busses, using different delays, you just label the other one "delay2"...Saves settings per track, so they can all be different.It's great for spreading the load among cpu cores for multi-instruments like Falcon, which aren't multi-core... just add the same template for another instance of Falcon to distribute the load better...Of course, it gets tricky if you save a kontakt instance as a multi as any changes will be lost when the original multi is brought up again. In such cases I've learned to avoid saving multis I might want to add to as templates... but the basic track set ups are lickity split...they effectively become a track multi, not a multi contained in Kontakt so changes can be made and saved ...
I'm still new at this "template" thing and ain't lookin' for huge templates as each song is unique. It's why I just love the "track" templates... as I can create flexible chunks of instrumentation quickly.The templates deal with both mix and instrument setups as one but I can't see any reason why you can't have a mix overlay of busses proceed or overlay material... With Sonar's recent monthly additions of new things like patch points, I haven't had the time to fully explore any problems, but the basic system of prescreen/add if needed, should preclude any problem. Wish I wasn't working on gardens for money or I'd have more time for such stuff

There's only one frustration with the track templates... they don't save the colors assigned to the various tracks/folders. It is a feature request many have voted on and we expect it to show up in some monthly update.Have no idea how Cubase or Logic work but Ableton and StudioOnev3 do NOT have track templates...You can trial SPlatinum for 30 days. I'd be curious how a real "orchestrator" would deploy this tool.
BTW, I think I heard patch points and aux tracks are now included...don't recall when and haven't used this yet.