Honestly, I love this game a lot and I’ve probably been playing it for about 4-5 years. I love how there’s always something to do in this game and the events are always “generous”, making it really easy to get started in this game. I say “generous” because they help you get all the 5-star players you could want and plenty of resources, but what is really valuable are the legendary 6-stars. The draw rate on them are so disgustingly low that I think I have maybe 9 so I pull like 2 a year. Officially, I think the draw rate is around 0.25%-0.3%. If you want to buy one, it’s like 50$-100$ for one, which is crazy. That being said, it’s easy to get a good team, hard to get a strong team and get used to all the mechanics and stats of each player, skill, synergies, stone, etc. so lots of grinding and reading involved. I’m just a free to play player, spent 30$ on this game total, so I don’t really know how the paying players feel. I know I get burnt out every so often and have to take a break from the game for months.
Basically, easy to get started, lots of grinding, and if you really want to a good, strong team, you should probably be ready to spend a lot of both time and money.