Since we're never gonna truly get the Paradox grand strategy that we actually want cause haha EU4 DLC did to Paradox what GTA Online did to Rockstar, I'm gonna make a guide on how to make some of the "newer" Paradox games actually tolerable and closer to their original counterparts.
I'm gonna start off with HOI4, you know painting simulator 2016 where spies are only getting added now and it's focused ENTIRELY ON THE FRENCH HELLO THE FRENCH WERE THE MOST FUCKING USELESS OUT OF ALL THE PARTISANS, THE SOVIETS LITERALLY INTEGRATED THEIRS INTO THE RED ARMY AND YUGOSLAVIA LIBERATED ITSELF, HELL EVEN THE CZECH'S MANAGED TO KILL HEIDRI- *ahem* anyways, let's talk about how to add some actual mechanics and depth to HOI4 that'll actually make it play and behave like a WW2 Grand strategy game and the associated playstyles and thought requirements.
Thankfully there's only one real mod that you'll need:BLACK ICE
It comes in two parts, the mechanics pack and the GFX pack, the GFX pack is needed since it overhauls the game's graphics.https://steamcommunity.com/sharedfiles/filedetails/?id=1137372539https://steamcommunity.com/sharedfiles/filedetails/?id=842834893
So what does Black Ice Do? Well Black Ice was a mod for HOI3 that just expanded on the gameplay for that game, in HOI4 it aims to not only bring back those lost mechanics and themes but improve on them. It overhauls how production works, instead of just producing "infantry equipment" for example you now produce rifles, uniforms, garrison equipment, bridging equipment etc. This of course means divisional organization has changed a lot, you can now change it from militias to infantry to irregulars to mechanized, semi-mechanized, mechanized support, cavalry tanks(haha France) etc. Techs have been changed to be unique to individual nations so Iran will no longer have Tier 3 heavy tanks just like the Tiger 2 or IS-3, and so each nation now has unique flavours and avenues of approach. Focus trees are now so big they will make your CPU grind on its own, seriously it takes a full minute of scrolling to go through the whole thing. They're also really cool now and very unique. For example Germany can choose to create the SS and get free units but this hurts PP, or choose not to and instead shoot Himmler for being a dumbass. Or you could research weird SS occult stuff and get a 50% tech bonus late game and get absolute mad stuff like rail guns(the big kind on rails not the gauss kind) or The P 1000 Ratte(yes). Economy and Politics has also been changed, there is now no clear best option like "free trade" or "complete mobilization" each choice now has a benefit and some sort of downside so it's situational, complete mobilization now gives better production but absolutely kills all civilian construction including repairs, ministers may now increase or decrease stability in random events or may die off cause heh Upper Class British inbreeding.
Downsides to the mod include killing your PC due to how autistically detailed it is, the AI being broken and unable to make actual choices, some stuff just being outright broken or missing but it's rather small compared to how frigging huge the changes are, I'd say do at least one run as Germany to get a feel for the mod as they're the most fleshed out nation because some people don't like being so autistic of whether your troops get the M36 pattern uniform of the M40 pattern uniform(those people are dumb and should play Imperator instead).
Dunno what game I'll do after this, Vicky 2 probably but that'd be a real easy one since there's literally only 2 real mods for it.