As for Mods, I use the below mods:
Minimap Increase Mod - 50% and Big Icons (I think the standard minimap and icons are too small. Mainly because I game on a 47" HDTV)
Nordis Crosshair Mods - Full 7.1 update. Adds a nice number count to your reload times and I like the clean cut labels
PoGS Contour Icon Mod - Sidebars/Alt key labels, pre-match/Tab labels. There are a lof of mods here to choose from. I pick the one that tells me the tank, it's tier, top average penetration and all of the relevant armour values assuming that it is fully upgraded
OverTarget Markers - This is a very nice mod that I found after making my previous videos. It can be set to permanently display player names, tank names and health, including an 1,000/1,200 health counter that will flash -200 for ex. if it gets shot.
None of those mods are necessary but definitely help improve my gameplay experience.