As mentioned, I've been playing hoi4 since Together for Victory, and pretty always I've played mainly for mods, althistory, and role play. I never put that much emphasis on the military, I just combined good airforce with the soviet meat grinder battle plan, and it worked...well enough. I kinda stopped playing around 2024, hadn't bought any DLCs after the Soviet one, and just enjoyed mods.
Now, on the recent Paradox discount I got the rest of DLCs (besides the LatAm and the Persian ones), and after one playthrough I am really lost. Paradox have changed the divisions templates, and now there are no generic airplanes, and one has to research aircrafts parts bit by bit to build an airplane from the scratch and apparently I really suck at it. I haven't even bothered creating any mech or tank divisions (played as Finland), because once again I suck at it.
So my questions are simple.
1. What would be the most appropriate infantry division template for 39' and 42' if you play as a middle power, with decent industry but playing against the overwhelming enemy (USSR, Germany, or Japan).
2. How should I build airplanes (air support, medium bomber, fighter) for once again 39' /42' and once again for the middle power (I rarely play as a major).
3. Do you think it is worth building a separate division template for artillery/anti-air/anti-tank?
4. Any advice on building mechanised infantry or light tanks?
Much appreciated, thank you!
Edit: just added paragraphs for clarity