I think Bethesda spend a good 18 months or so making and releasing awesome DLC and patching and supporting the community, this they do better than anyone, I wouldn't call the fact that they support and respect the modding community 'relying' on modders, as people have stated the console success vastly debunks that notion. Morrowind was the first to be released on consoles and it sold more on Xbox than PC, a LOT more! Cannot rely on modders for that so NO is actually the definitive answer to the first question.
Console mods will not make them rely on mods any more than they do now, I actually find it hard to accept people using the idea against them. It has never really been done before and if they can pull it off they will have pioneered something revolutionary, that's the way I see it.
DLC is more important than mods, if only for the obvious reason that DLC is on consoles as well as PC. The PC crowd hate the fact that the game has sold LOTS more copies on consoles than they ever have on PC, but that's the way it is. So for sheer numbers DLC is more important. Besides Bethesda DLC is substantial to say the least.
I am excited for mods coming to consoles, it very exciting. I'm mostly looking forward to additions and advancements to the settlement building but Beth will most likely be adding to and tweaking that themselves anyway.
Fallout 4 is NOT finished, we all know that. I wouldn't say that means if feels like an 'incomplete', experience as it is, as it stands, still one of the best games ever. Given the fact that we know DLC is going to be coming, most likely huge and awesome DLC at that is nothing but a good thing, I mentioned this in another thread but I would much rather be able to play the 'base' game now and play DLC later (which will feel more special having already bonded with the game and your characters) than have to wait another 18 months or so to play ANY of it. So yes Fo4 is 'technically' an 'unfinished' game (which again I see as a good thing), but I think it is unfair and overly critical to call it an 'incomplete' experience.
I'll say it again, Bethesda 'support' the modders. It is arrogance on the part of the modders to suggest that means any kind or 'reliance', arrogant and ungrateful. Some devs don't like people modding their games at all. It just seems the more good Beth do the more flak they receive.