The biggest problem with this MOBA is that it doesn't have a clean feel to it, smooth movement, easily explained abilities, fluid auto attacks, and super OP/Nerfed to hell characters. I'll go through each of these, but first, I'd like to state one of the cool things about this MOBA:
The system for upgrading your minions/upgrading towers is A: Easy to understand, B: actually worth using, and C: works.
Now, onto the problems:
The game feels like it wasn't polished or cleaned, just thrown out to the public because of deadlines. It would be like if you took LoL from Season 1, and compared it as an equal MOBA to Season 4 LoL. Season 1 feels gritty and awkward compared to season 4, and it's becaused it's been cleaned and polished since then. This game needs that cleaning and polishing badly.
Movement in this game is unresponsive and delayed. You'll be trying to dodge a skill shot, or just move in random ways to fool your opponent. Well, unfortunately, even in offline mode, it takes about half a second for your character to respond.
The abilities are convoluted and stated in weird ways that don't just say "roots your enemy for 1.5 seconds" or so on. It takes up 3-4 sentences describing it, and not really telling you exactly what it does.
They had an interesting idea for the auto attacks, having melee auto attacks cleave an area in front of them, while ranged attacks will hit the first enemy in front of them. The problem is that auto attacks are delayed, like the movement. So by the time you auto attack, your enemy has probably killed you.
Some characters in this game are just extremely powerful and others just pointless to use. Gandalf the Grey, his E ability deals massive amounts of True damage, and it scales. It also roots the enemy till after the damage hits. It's insane. Whereas Gollum/Smeagol is supposed to be an assassin who leaps in, stuns and silences, getting resets on his ultimate, but he deals 0 damage with any of his abilities. Those are just 2 examples.
If the devs were to really focus on making this game work, I think it could be something great. However, it seems they've given up, and nothing is getting fixed.