Iso 8 grind is hard
There are more than 200 champions in the game, almost all of them having UpTo 6* variants and it's very hard for ftp players to level up their 6* as it takes double the amount of iso then 5* to level up.
So I purpose a simple change that will help people in TB/paragon progression level to level up their champs a little bit more that is to change the monthly cavilier crystal to have a chance of 6* or 5* but atleast getting a 4* so it will boost their iso just a bit.
Moreover reducing the price of crystals in incursions tab for different progression level will help this too and encourage players to play it more except for start of month
Sorry for bad English as it's not my native language.