In my opinion snares shouldn’t be as high as they are percentage wise especially those based on AoE abilities.
I think a good suggestion would be putting snares in line with other buffs/debuffs. Meaning having minor and major snare and asssign those to certain abilities. Easiest way to assign would be to have AoE abilities be minor snares while single targets could be major.
I believe the best route would be 15% for minor and 30% for major. It would allow them to stack to up to 45%.
I’m just spitballing this off the top of my head and used the highest major buff percentage besides empower as my baseline for the conversation.