Does Mini-Gnar Need Help?
Continuing onward from my proposal Xerath Ultimate thread, let's take a look at one of League's newest members: 
Gnar was unfortunately brushed over by the Shurima Patch and the arrival of Azir. While a definitely unique champion, Gnar is being neglected some, I believe. His passive, which is far from unpredictable, is a rogue element. You can carefully manage his Rage, but it always activates, sometimes when you don't want it. Don't get me wrong: Mega-Gnar is a beast (pun fully intended). But strength out of place isn't strength at all, and occasionally it'll fizzle out when you most need it. That leaves you with the adorable, but fragile Mini-Gnar.
In my experience, Mini-Gnar doesn't feel very satisfying. It's a time-out; a means to reattain Mega form, and little else... which I'm not okay with, from a designer's perspective. Gnar's concept is to have two forms, with their own strengths and weaknesses, but when one of the forms leaves you fragile and feeling helpless, it discourages any attachment to it. Sure, it has its uses, but when Gnar makes plays, it's usually delivered in Mega form. So what can be done?
Mini-Gnar has a simple strategy: auto-attack to apply Hyper, toss Boomerang, and hop to and from; comparatively, Mega Gnar has a stronger toss, a damaging leap, a rather strong stun and his game-changing sweep ultimate. Mega Gnar has more utility, and can take a hit better than Mini-Gnar... which leaves you wanting, since it's not your primary form. IMO, Mega Gnar should be satisfying but blunt; useful for certain conditions. Mini-Gnar should have the utility. Give him an actual ultimate, besides a speed boost which he already gets. Make players want to be Mini-Gnar.
Discuss ability changes.