Heroes 5.5 WarGame Edition - Tactical Edition.

Why not? There are creatures that won't deal much damage even with double damage.

The point is that in WGE, creatures deal more damage than in the original, which exacerbates the luck issue. With the same WGE ratio, the battle will be less dynamic than in the original due to reduced speeds.

From my own experience: I approach Reapers to Bears. Bears aren't very damaging in principle. But with a lucky double attack, they can wipe out half a stack. And there are only 2 Reapers in the stack. So, a simple attack from the Bears isn't scary for them if there's no focus. And how do you account for that? Not to expose yourself to any enemy unit at all? The situation is somewhat reminiscent of the hit/miss in Disciples, a rather harsh randomness.

I'll probably make both versions for testing, with 100% luck and 50%. So that you can feel the difference.