The only reason why dont have items is cuz the game is make for just 5 minutes...we dont have time for build and buy items
But i dont talk about that way...i talk about new way...buy items for your champions...just like arcane legends character
So add items shop and for better items you can make adventure mode
every champions will have diferent kind of items(tank,assasin,marksman,mage)
So the players must focus to build best items for all champions...and the game start be to much funny