Fantastic game, humane devs who focus on quality of experience and players level of enjoyment and engagement. 
Thank you folks at nintendo.

Combat is involved and can be extremely intense later on, like in specific raid late late game content its insane haah 

Beside that, rates in gacha are beyond fair. DUPES, NAH XD (OK you use dupes to raise lvl cap on weapons, cards and dragons (your equipment in a nutshell. HOWEVER they are very very easy to get and there are relatively simple to obtain items that one may sub for any dupe other than weapons if im not mistaken, but they can be crafted so its non issue

The difficulties in the majority of content are not as engaging as id like and that is one of my only issues w the game, what i mean is, geiuping and raiding is easy, if its not, you get carried by randoms lol but really its minor. There is plenty of difficulty available its just i would have been more impressed with the game if i had to try in earnest at any point outside of specific raids and event challenges

If you want to scratch that itch and pull some ten grabs pretty damn often (for instance two free twn oulls daily, as well as very easily grindable special currency (not freemium bcs you cant buy it, they jave a seperate currency for that and they make no attempt to push it on you) one can do 6, 8, ten tenxpulls in a day of moderate carefree gronding. Couple that with overtly generous events and a responsible support team behind a very good looking and well done game. 

Special to note that no chat system is available in game outside of guild interface so you can let your little ones play it if so inclined. Let em try the tutorial xD a five year old could easily wrap his head around most of the basics. Menus might throw em haha ok peace.