When I spoke to Dark0ne, I actually proposed the idea of a mod-pack/mutiple download system on the Nexus, as a competitive feature, or perhaps even as a further incentive for premium membership. There isn't much interest at the moment. That is their choice - I am not wedded to the Nexus, and if other services such as Steam or Desura offer us better functionality, STEP will no doubt be happy to make use of it. Again, personally, I don't see this happening anytime soon.
I am interested in an explanation as to why. The way I see it, if we're going to wait for interest to die down, we may as well just not do anything, because by that time anything we do will no longer be relevant. Additionally, as I've mentioned, if we (or the Nexus) don't do this, Steam Workshop will (and probably others, e.g. Desura), and the Nexus will no longer be where most users download mods, anyways.
As far as an explanation of why I'm not interested putting together our own consolidated pack, the main point is one of workload and hassle. It would require a fair amount of maintainance and the ongoing negotiations with modders and their wishes - some will not consent, making it a partial solution, others may get offended and revoke permissions, updates will become our concern to test, integrate and upload, and so on and on. It's simply a whole other department of work that I don't think any of the team would consider justified at the moment. We have limited time and many other priorities. Personally, I have plenty to do on working on the automated installation system, and I'm quite happy to leave the downloading element as something to examine further in the future.