Here is a list of my person top 10 Witcher 3 must have mods
1. The Witcher 3 HD Reworked Project
This HD replacer fixes a number of the ugly textures in the witcher 3. With very little performance loss.
2. Script Merger
Script Merger Helps when combining a number of mods in one play through. It will highlight conflics and make certain mods work together in a rather simple to use interface.
3. Over 9000!
This is a weight limit mod. Allowing Gearalt to carry what ever he wishes and not impead your exploration by having to return to a town to unload all your loot.