I only have 3 5* potential now and banging brick wall. I can accept that pvp, event is pay to win but hell.. even normal stage u need to pay to win?
*Pay to progress. People who are F2P progress at a slower pace than people who pay.
Summons are RNG-based, even if you pay, you might not get good heroes, but you can get lots of fodder for training. Also, you don't need a full team of 5* to do well, some limit broken 4* can be on par with 5*. If everything is so easy, you will finish the game so fast and get bored with nothing else to do, sometimes the fun is in the progression.