Do not forget you're up against the majority of mod authors in this idea of mod packs still. Unless this changes it's unlikely you'll see this practice supported on the Nexus. The authors the mods of which you intend to include will have to allow it first, before the site will even begin to consider allowing their hosting on here. It's a legal requirement for one, and more importantly a matter of respect and support for two.
The individual reasons for why the authors are against it in general vary massively, and no, it's not just because they won't get the fame. If you really think that low about authors, it's best you forget about using their mods.
Most points that were brought up against it in the past, and then again some years later, and again more years later, and again after this, and again, and... but I digress, were actually more in your, the users', favor than in the authors'. A mod pack is not the solution, it is a problem you just can't see until it's too late and the damage is done. Those people working with the games and modding them for years and years on end know what they're talking of, you don't.
I'm not saying mod packs can't be done correctly, as it has been done for a multitude of games already more or less successfully in the past. But it needs dedication and investment, and most important of all, the support of the authors the works of whom are to be included, as there's nobody who knows their works as well as they do, and nobody who knows what all will break when their work gets introduced into a mod pack without second thinking or careful oversight.
I've seen mod packs "illegally" released in the past as well, and a horrid bunch of clueless blinds speaking up and preaching in support of them, only to sooner or later end up on here because something broke and the author of the pack knew nothing about the reason and they were running to the original authors instead, who again knew nothing about what the pack author messed up in their works and weren't of much more help than advising a complete uninstall and giving detailed instructions as to how to do it the right way from the start.
An all-too-easily missed matter of fact with these perfectly hand-crafted illegal mod packs out there is, they're not to everyone's tastes in all included details, precisely they're only to one single specific person's tastes in every single detail, their illegal combiner's, and once you add or remove even a single mod, everything is bound to crash and burn rather spectacularly. You can't see it, that's fine, but please listen when those fine people in the know are yelling up in warning to you that it is.
You can beat the dead horse even deader as much as you want, you certainly won't get banned for discussion of the topic alone.
Get a team of authors together, select a small group of their mods unlikely to contain anything one particular user might not want, or do the obvious and make everything optional, and set out to make them all play nicely together and under all thinkable users' game and mod collection circumstances, and who knows, you might even have a chance to create something worthwhile in the end. And maybe the Nexus will even allow this team-project to be hosted then, as it most definitely won't be just another Random-Joe-Blow's All-Time Favorite Mod Picks kind of spam upload, which is what the rule tries to prevent.
(And since I was reminded time and again that my disclaimer in the signature isn't enough and while there's a staff badge under my name people will always take my personal opinion on some matter for an official Nexus statement instead, which it really isn't at all, I'm saying it again, unless I'm writing in moderator orange, what I write here is just that, my own personal opinion as a mod author for 10+ years as well as a regular member on Nexus for longer than it exists, and that is that.)