Respectfully, I think you're missing the point Eric.
Just because a layer is hidden, doesn't mean we don't want to see it. In fact it's important to see it so that we are reminded what layers elements can be put on.
If you don't mind me asking, what (large) companies have you implemented this in and whose lives have you simplified? I'd like to hear from them, seriously. Of all the customized templates I've built for firms large and small around the world, never have I included this old feature.
Why? Because it's too restrictive and it's misleading. As you've pointed out, hidden layers in a layer combination need to be locked to benefit from it. That's easy, but let's face it, whilst layer combos are an integral setting in the process of filtering information from the model to views and most often out to layouts for publication, and they're exact in previewing that, the reality is that most 'work' is done by flicking through all layers constantly. Perhaps working on a single dwelling with layer combos is practical, but any power user working in a team on a large multi-res or high rise project (et al), would crucify me for locking and hiding their layers. Not to mention any newcomers who would wonder where the hell all the layers were!
I'm sorry but the calibre of the tip, and the rigmarole to get it, is just lacking IMO. Tips like that are shared here for free everyday. I would have thought that a tutorial on how to make a toolbar and/or keyboard shortcuts of the Quick Layers Palette and incorporate them into your daily workflow would have been of more benefit. Or even customizing layers to meet a company's individual needs and naming the layers ~without~ the A-, C-, S- prefixes so that users could, for example, hit the W key in any layer list to get to the Wall layers, would be more enticing to consider coughing up some dough for.
With the amount of information available, currency is king and new features need to be revealed, not ones from ArchiCAD 7. Making the movies is simple enough. In fact here's a quick screencast I hastily made before enjoying a Friday knock off drink with my colleagues (who were partying in the next room). It has the obviously attention grabbing name of:
XREFs Are Dead
It shows how the Drawing Tool in ArchiCAD 14 can help better manage your layers, when it comes to dealing with DXF/DWGs. I can testify, from the trenches, that this new feature seriously does simplify our lives and more users need to know about it.
I hope this feedback helps not hinders and I thought it better to answer here than LinkedIn, Twitter, your website, etc, etc, etc.
Cheers,
Link.