He was a top-lane monster for a lot of reasons, but not the range on his Q, nor will that return him to favor. I thought this was the least offensive of his major problem. You could fix what I see as a no-poke problem three ways:
- What i proposed above
- Giving him a lot more control with his E
- Buffing his movement speed.
He's got horrible MS, so his option as a support is to bomb them with sapplings and go OOM, or W,Q and hope to get out before the enemy can capitalize, or hope his ADC provides cover fire. Should he receive the buff I've proposed, his Q would be viable without W where as now, with his slow MS and short Q range, he really needs W first.
It's fairly easy to dodge, its slow is minimal and the damage isn't the issue. He's a CC machine, he just suffers in the bot lane because he's just shy of being effective. I'd say he's probably a tier 2 support right now where an experienced player can make him work, but it's going to require effort. A range increase alone isn't going to make him Tier 1, and it won't buff his jungle, and may only give him a slight benefit in the top lane.