Thoughts on the thresh ultimate

I think the thresh ultimate is a really cool ultimate adn i like it. But then i saw the ultimate of "The Butcher" from heroes of the storm. To all who don't know it: Throw a hitching post that attaches to the nearest enemy Hero after a 1 second delay. This deals heavy damage and causes the enemy to be chained to the post for 4 seconds. (they cant move out of an specific area) Thsi would be awsome because it would fit threshs theme perfectly. I know that thresh isn't a champ to rework and his kit is perfectly fine but i want to know who thinks this would be an awsome ultimate for him too.
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