Speculation speculation oh the speculation. So having put in now 300+ hours and completely finishing every side quest, quest and buffing out all settlements now the questions is this -

2 years from now, will FO4 with all the DLC and mods give the same refreshing "new" experience that I believe FO3 & FNV experienced? Will it take this much time or be shorter? I remember playing FNV and not liking it but after I modded it a couple years later, it was a completely exciting new experience that made me totally immersed into a game I thought I would never play again. I would even say Skyrim has another feel of "newness" to it with all sorts of mods for additional quests, new creatures, hardcoe mode, etc...

I ask this because I am very tempted to walkaway from FO4 and revisit it once all the DLC is out and the mods are flowing, starting the game completely from beginning so as to have the same AWESOME new feeling as the previous stated.

That's the beauty of these games. Due to all the mods and an almost infinite combination (seriously when it comes to Skyrim I could have played that through enough to last me until my natural death date, and each time being a different experience) it's almost impossible to get bored when it's a matured product. The only thing it can't satisfy is the need for co-operation and competitiveness.

Yes General! Agree wholeheartedly! I've played Skyrim 4 different times with complete enjoyment on how well it gets better and better. Hoping FO4 buffs up a bit and has the same Skyrim-esque feel to it in a couple years.

Yes.

I believe the game will age well like a good bottle of wine.

To quote Tinker Tom, all of the expansions and updates are going to make Fallout 4 more... well, more. So if you don't like Fallout 4 now, the DLC won't fix that; but if you do, the DLC will give you a great time.