Stop adding units and why (math time)
Riot should really consider to stop adding more units to this game. If they want, at least change the unit bar to 6 or even 7. I did some rough math (many elements not considered, but I'm not a mathematician so...), here is what happened at lv7 if you don't level up to get there. 1 cost: 4.79 units Roll for 3 star: 17 times (roll at lv3) 22 times (roll at lv4) 30 times (roll at lv5) 2 cost: 4.25 units Roll for 3 star: 35 times 3 cost: 2.9 units Roll for 2 star: 1 time Roll for 3 star: 53 times (roll at lv6) 4 cost: 2.61 units Roll for 2 star: 5 times (roll at lv7) Now the chance is now very dangerous yet, but if they add more, especially 3/4/5 cost units, it'll be very hard to get a 2 star unit and that's unhealthy at all. Now they are adding one to 5 cost units, and it'll be literally impossible to get a 2 star 5 cost unit at all by then. RIOT, STOP WHILE U CAN.