For Storm drake, I see the multi stun effect useful as always, but I kinda feel the followup overkill combo doesn't feel right to be his main trick. I always thought of Storm to be the god of winds, having something more to do with KNOCKBACKS!
A fun idea is to make his effective knockback range for non-heavy heroes increased by like x5 times, yep five times! it would be glorious to see him send the other team flying out of the screen with his white, or break the line of a non-heavy tank with a gustnado every now and then!
I actually like savage's leg, nothing to get really excited about but is certainly very effective to make her do exactly what shes all about, tanking her way with lifesteal, occasionally shredding her enemies to pieces.
Water wyrm, first, the added great geysers is amazing and the way his white should have been in the first place. Giving more focus on his great geysers can make it worthwhile to use him to shut down high agility heroes with more reliable disables.
But, I don't like magic vamp on him, it will create many frustrating hard to counter scenarios, I'd rather like to see him give his team magic vamp but not him! He should feel more supportive and killable in my opinion.