The gratuitous RNG in this game is what really kills it for me. The assistants have awful RNG on their bonus skills and are generally deadweight because nothing ever procs. And to top it all off they had the slimy idea of making it so that an assistant won't be removed from the gacha pool until it's level 3...
But wait, then that means you only need to roll 1 assistant 3 times then, right? Wrong. Every level has its own leveling tier, which adds up incrementally: 1 time for level 2, 2 times for level 3, 3 times for level 4... Wait, what? Yes that's right. I was lying. And so was Line and NHN; level 5 is the actual maximum cap. I have no fucking clue why they say it's 3 when it's actually 5. The game is generally obtuse in what it conveys regarding stats and percentages.
And so, if you do the math... You actually need to roll a whopping 10 times to actually be rid of the assistant or doctor from the pool. And you know what that means. Only whales who are delirious enough to invest in this game are ever going to get anywhere. Stage Mode is mostly fine, if a bit bullshit at times, but you can brute force it with smart play. Versus Mode? Forget about it. The aforementioned whales make it an absolute shitshow. Considering the level increases actually do raise the RNG percentage by a bit on an assistant, their stuff is more potent and more likely to proc.
There are things I do like about this game, as scummy as it is. I like that it has substantial single player content and scoring with goals to achieve, and a slew of amusing characters in doctor form with unique stats and abilities. And yes, it is indeed reminiscent of Virus Buster from Dr. Mario Online Rx but in reverse, but I find it to be a fresh take on the formula and not as bad as it sounds (Although nothing beats standard classic Dr. Mario gameplay with pills falling from above instead). There are moments where it feels great to conquer a level and its ridiculous new gimmicks through ingenuity or cheese. I hope an actual new Dr. Mario game takes cues from those particular things, but as for the rest of it? Complete bunk. Like how everyone else is saying here, this a complete disgrace to the IP and the gacha + RNG greed shows Nintendo is starting to get enticed by the dark side of mobile gaming. I'd like to think it's mostly Line and NHN's fault, but it's hard to tell at this point.
Regardless, the sheer amount of gacha rolling and RNG uselessness has me forever turned off. I don't even feel compelled to continue playing even with the new updates that add characters and worlds, because the expanding pool is only increasing the odds when rolling now. No amount of freebie staffing tickets over maintenance hiccups is enough to sway me back. Oh yeah, and one last thing: Hearts are useless currency. You can only use a maximum of 10 per day from friends who sent you hearts, so all those hearts Nintendo and the others give you are just sitting there rotting away until they expire. Doesn't matter how many friends you add, because it is a futile endeavor in the end.
It's almost as if Nintendo handled the creative gameplay and new content and feature additions, and Line and NHN handled all the scummy mobile business strategies, loopholes and limitations, surely inspired by other Japanese mobile games that engage in that kind of drivel. But the fact that Nintendo actually allowed such things in the first place is what's making me doubt them to begin with... Just plain sad.