I have 20 hours in game, so I think I have a fair idea about it, and can write a decent review based on my time.
First game to utilize the MOBA style platform, but create an actual sport with it.
NOT P2W at all. The items you buy, if you decide to buy them, are completely cosmetic. Similar to LoL, there is no fee to play this game, and no downfall against people that have. They just look cooler.
With a small community at the moment, it gives us the ability to really shape things, and get to know other players. This can be both a Pro or a Con, depending on the personality types.
There is a decent amount of customizations you can do at this time already. I am sure there will be lots more to come.
Bots..... Yes, the bots. This is quite possibly the most atrocious AI that I have ever come across. I am sure this is just due to it being in alpha, but they are pretty much useless in any game.
Game has its share of lag, mainly because its under a P2P host atm. The dedicated servers ARE coming, so this will likely lesson the lag considerably.
Exploiters are and will be around for the duration of the alpha, as with most alphas, until the bugs are submitted and fixes are made to stop this. Just bear with it, time will fix this particular problem.
Overall, this is a fresh new take on a genre that was almost at its death. They have reinvented a way for people to play competitively, and it is intense. I find that the game is fast paced, very enjoyable (frustrating at the same time) and mostly, im excited for the future of this game.
Hope to see you in the arena. Good luck and have fun.