I've been in the industry for 25 years, I've never come across a single client developed civil 3d template that I could run with out of the gate.
Most are a blend of several standards haphazardly bound into one template resulting hundreds of unnecessary but unpurgable layers. Many are simply incomplete styles with an outdated title block stuck in it. And almost all have a mix of custom and out of the box linetypes that are a mix of Imperial and metric.
If I blindly used what was developed by clients, they would (and have) send it back without reviewing the actual design.
It's fine for our main day to day clients as we typically refine something that works over time.
My question is what is everyone doing when you receive a template like I've described above from an uncommon but potentially prospective future client. I'd estimate I spend 70% of the design task for small projects just fixing styles ad-hoc, including cleaning up the received background data. Theses things aren't budgeted for typically or PM's and clients don't even know it's happening in the background.
Obviously this is a bit of a rant and I'm not sure there's a solid answer out there but I would love to hear your insight.