It is amazing, considering i played with over 250 mods and another 300 texture mods in this playthrough. I also managed to finish all main quests; Alduin, Dragonborn (Miraak) and Dawnguard. But also Wyrmstooth and Falskaar main quests.
I never cared much for the Civil War, so that is the only side quest left to do. Best playthroughs are where you leave the CW as long as possible IMO.
I did enhance the Civil War experience by addin this mod:
WARZONES 2015 - Civil Unrest by MyGoodEye
It adds a lot of realism in battles. Disadvantage is that the game sometimes hangs for a moment when entering a CW area. It is a bit heavy on scripts, i think, but the extension is awesome. Lots of new armors as well. Greatly adds to the immersion of a land under war.
I even installed some new mods over my existing save. A tricky thing to do as it can mess up your game.
I mention a few:
The Notice Board by MannyGT
This will add notice boards outside inns with a number of small quests or errands you can run or do for various NPC throughout Skyrim. Very nicely done and also good for a few laughs as well. It has an Open Cities compatibility patch.
So instead of having just a single job to do for a Jarl, you can now do a number of things for people throughout the Hold.
Amorous Adventures by FoxFingers
This will add some "depth" to certain NPC and followers. It also adds some quests and on top of that will turn the Dragonborn to become the biggest Casanova of Tamriel.
Deadly Mutilation - dismemberment blood and gore by Lamer1000
This mod is probably not for everyone. It allows you to chop off limbs, burn opponents to a crisp or even to ashes and freeze them and smash them to pieces. And there is more....
I think it adds some realism to the game. Not for those with a weak stomach.
Hearthfire Extended by Kinaga
This will allow you to add more stuff to the Heartfire Homes. Build Mills, Wells, Beehives and even extend the Cellars. Mod is WIP but already adds a lot of cool stuff to the slightly limited vanilla Heartfire DLC.