E increases damage from all sources instead of Swain only, but for a lower amount
They decided against a mechanism like this because it compliments a meta game they dont like.
Not sure where the quote is. I think it was in Riots official response to Swaingate.
EDIT: Figure I should have some actual input on changes otherwise.
I like the idea of a hero with so many activate/persistent abilities like you've proposed here but I feel like it could make him almost too OP.
I think Riot could keep him how he is now if they just buffed the numbers a bit. Although a persistent Q is a great idea.
The Ultimate definitely needs some built in defense though, that way we all wont have to build like a tank just to survive through using it.
I think the snare is fine as is since it is a group snare ability, making it pretty invaluable at certain times. If they added a 0.5 or 1 second
Silence I think it would be greatly beneficial to his utility, at risk of making him nearly impossible to lane against (You land a W like that,
run in, EQR and they will take massive amounts of dmg without the chance to deal any back. You back out well in advance before they get