urgot shield as a toggle?

would it be healthy to make urgots shield a toggle but recovers overtime based on amount of missing mana if left on? obviously mana per second would deplete it.

perhaps even giving a built in thornmail effect of some sort

and shift the slow effect to an actual lock on through his E.

Ex: landing E will cause his basic attacks to deal long range damage and a slow but with half of attack speed.

• based on the radius of E, urgot would have a healthier targeting and the move would be used more defensively
• choice between close range sustain damage (compliments the toggle and current ult for tankiness) and long range soft kiting for high skill cap poke

this would leave a place holder for another move perhaps