You have Shurikens
You have Arena rewards
Paying is Thanksgiving wheel
And then they gave permanent things to do. I consider that a positive event. Oh you don't have a chance for Minato... I'll start playing the worlds smallest violin here. The issue is they have to pander to the paying folks some of the time. Why is because that is how the game continues on. So there are going to be rewards that others can get that a player not paying won't be able to get. (3rd Hokage) They are event ninja for a reason. You have to do some special event and that is all.
I really didn't see so much saltiness when the 3rd Hokage was on the event block.
This time you recharge and get chances in the wheel, then extend your jonin medal for 6 more months and on top of that you get shuriken for every 10 ingots you've spent, which is like 188 shurikens just from the jonin medal. Let's not forget that you can get Minato from all of that if you are extremely lucky. While the free players get 5 treasure keys daily so they can buy the "discounted" ninjas who are more expensive than before and baloons event in which they can only get some purifies. Yeah, totally balanced events , indeed.