I really hope that the game can turn out good, and not another Mn9, but looking at the development some fears have started to creep up for me. I hope I'm wrong.
If you played the Beta backer build you would know this isn't remotely the case.
I can almost guarantee that any of the critically acclaimed Metroidvanias released in the last few years like Hollow Knight, Dead Cells, etc. will end up being way better than this. It just seems like Iga is resting on his laurels and rehashing his earlier stuff, whereas different devs have new ideas and are making fresh games in the genre.
What is exactly being rehashed here? There is no assets, character design, levels, or music being carried over from any of IGA's previous work. Everything was done entirely from the ground up. It's not like IGA could reuse stuff like he did with SOTN for obvious reasons.
In terms of controls and feel it's plays closest to SOTN, and for the initial pitch for this project that is exactly what backers expected out of this. If anything folks would be far more likely to be disappointed in terms of gameplay the game isn't remotely similar to SOTN, and based on the playable backer builds, this has not been the case.
Backers wanted another IGAvania game and we getting exactly that in terms of gameplay where it counts. That is what IGA promised with his initial pitch and all signs show that is exactly what we are getting.
There are some folks will have issue with some of the aesthetics of the game preferring all hand drawn 2D as opposed to 3D, but that is another matter but in regards to gameplay in terms of actual feel and controls there is little to be disappointed about. For an unfinished beta, the Bloodstained demo is by far a superior game compared to the finished result that Mn9 turned out to be.