T(spreading the mod resources instead of gathering them), and, in my opinion, the Nexus is more RPG-oriented.
This is the worst indeed, that is why I'd love to see only Larian's official solution for that. I'm not going to waste my time browsing some nexuses or Moddb or some forums, ij ust ignore it.
Steamworkshop and Larian's vault is maximum I'm ready to spent my time on. And it will be much more efficient and handy this way.
Browsing some nexusses? You have no idea how it works I think. Every game has its own site on the Nexus with its own chat, forum, databases, and so own. It would cost Larian a lot of money and manpower and to create and moderate all those infrastructure from scratch (just look at this semi-professional forum...), money that could be used to make DC and D:OS better. It's imo way better to use an existing, well-working solution which is available from the start..

But I also think that there should be only one "official" mod resource, Nexus, Moddb or another solution.