I want to point out how blind effect is one of the most controversial and changed skills from empires and puzzle history.
Here they added the status effect miss on the skill (before only the hit missed, status effects always applied)
Here it was lowered by 5% (it was 5% higher before)
Here each individual hit from an AoE is considered as a single and not as a whole (before or all the hits were a miss, or all a hit)
All this to understand how much it is difficult to give to blind effect a real “value”.