1) you can find the War 2 for PSX source on Archive. It has all the Windows stuff commented out. It might be possible to uncomment and compile with something like Borland C or Watcom C or whatever they used.
2) the modding scene was phenomenal. Not mentioned is StarDraft for obvious reasons but a counterpart to WarDraft. This is where our story takes a turn and the name Camelot Systems emerges, along with a King Arthur (Andy Bond) who shortly after finishing his comp sci degree went to work for Blizzard and has been with them since. This website is a homage to CamSys (JorSys).
3) War2Bne is a thing to behold. Diablo, Warcraft 2 et al being able to seamlessly chat and DM players across games was pure magic.
Many stories to tell, but we will never step into that river again.
I'm honestly not even sure which other RTS game would be close? Age of Empires 1? I don't think it ever had the same traction or hype until AOE 2.
What makes Warcraft 2 the apex for you over StarCraft 2?
I played through the orc campaign last year and had fun. It's definitely aged, but it makes me wonder if something like that could exist today. Story games are popular, and I think always will be (people like stories).
Instead of a solo protagonist, can we bring back the hero (a la WarCraft III) and their army? Or even the invisible god like WC2?
We had to wait until after mom and dad went to sleep that night, then snuck up the hall to install it and play it as quietly as possible.