> random middlewares

The whole concept of "middleware" in Ruby server applications was a huge mistake. Your average Ruby developer has no idea how any of that shit works, and it's an unnecessary abstraction over taking request data and passing it through a function, something that should be simple for even a junior developer to figure out. Somehow it was decided that having a standard for the shape of data wasn't good enough; there had to be a demi-standard for modifying request data before it reaches the primary application code.

If you have to tell a middleware what order it's supposed to run in with relation to other known middlewares, chances are the middleware system itself is a poor design.