What does any of this have to do with the point i made?
His Q isn't for nor is it even good for harass. its for the heal to come out even in trades.
You seem to think his heal is only good for healing during trades. As I've explained, with words, it doubles as harass in lane. I even used examples with other champs. Nami W doubles as heal and harass. Soraka Q doubles as heal and harass. Rakan Q doubles as heal and harass. And before you mention cooldowns, Nami's W is only 2 seconds less than Rakan's Q. It also costs more.
Im not talking about in the middle of a teamfight obviously.
What the increased range lets him do is avoid getting close to get it off in the first place...on a champion that is supposed to go in....
It means he has far less situations where he has to commit to anything.
Except...he doesn't? Tell me, what is the point of going in for a small heal if you are taking damage for it? Ok, you land the heal and get it, awesome, but it actually heals nothing but the damage you took to go get it. Do you see the problem there? You are taking damage in order to heal yourself. That makes no sense. What's the point of using the Q then if you are just healing off the damage you took to go in and get it. Increasing the range allows him to actually get something off landing his heal which he still has to aim in a lane full of minions.
You land the ability that's on a high cooldown, get the heal...and then are rewarded nothing because it's healing off the damage you had to take to actually get it unless your enemy laner is stupid and ignored you. In that case you're lucky.
The heal he has, which once again, he has to aim, has a longr range than other healing supports (except Sona) but it's different than other supports. He isn't like Sona or Nami or Raka or Bard where you just press a button and bam, heals (which are better than his). He has to first aim it and actually hit it and then give it to his laner. In fact I'm pretty sure he's the only support that doesn't just press a button for free heals.
If he doesn't have a heal that is longer ranged then he is very vulnerable to harass when he goes to get it and the only thing he heals off is the damage he took to go and try to get the heal (which happened a lot). Increasing the range on Q allows him to get the heal if he aims right from a farther distance so he is actually rewarded for getting it.
This is something he needed, only person I'm really seeing having a problem with it is you.