Something kinda unpopular, that I think needs to be stated:
Junglers don't belong in lanes.
With the exception of
, who's more a midlaner that went jungle than a jungler that went midlane, I can't think of a single jungler that's healthy in laning situations. Either they're useless in lane, or they're absurdly oppressive in it (sometimes they're a bit of both!). But either way, they're terrible to see in lane for someone.
Why is this? An ability you only need to dodge once or twice, before being able to go back to being just fine, suddenly becomes rather oppressive if they can keep throwing it. You only need to dodge Lee Sin's Q once or twice, before he has to back off to keep farming (or he risks getting into a 2v3). In lane, you need to dodge it again and again and again and again, because you don't know which one could be with his jungler there. And even if his jungler isn't there, he can use it to deal a good amount of damage to you. Fiddle goes from being a sometimes mild annoyance in the jungle (who can deal a lot of damage if he pulls it off right) to being legitimately oppressive in some situations (Namely whenever botlane). Rengar top is...Rengar top.
...
And so forth.
Laners going to jungle has a chance of going either way with them. Either it's obnoxious and annoying (Ez and Twitch jungle), or it actually makes them feel a bit better to play against (Diana doesn't feel as Akali-esque, for example). But junglers going to lane has almost universally been terrible.
Why is this relevant? Because I see a lot of people begging for Riot to revert the loss of minion bonus damage for Fiddle's E right now, and I've seen similar things asked for in the past.
In my honest opinion, Riot should be working more for pulling junglers out of lane. It's holding some junglers back, since they can't be buffed to be good, because they're too oppressive for lane if they're good in the jungle (Such as Fiddle).
Now, should they ever be in lane again? It depends. Right now, they need to push a lot of them out of lanes. Riot can later fix them up for lane, once they're balanced for jungle, but they should be careful to not make them too strong in it.
Just my two cents.