I played first time Hissho and ESG mod and I got wrecked on Endless difficulty.
I normally win.
So I like it.

Oh yeah, the thing that stopped me was because I was trying to expand territory but my fleet got stopped in Cold War territory....which doesn't happen in base game but kinda makes sense but I had no movement points for many turns from the blockade.

It didn't matter anyway because Lumeris won an Economic victory under 100 turns shortly after.

Other good things are making heroes more expensive from the marketplace and giving 'Spuds' more bonuses.