Could we make the middleware method more consistent?

[tontonsb]

Currently chaining ->middleware() on route definitions works differently depending on where in the chain it is. Sometimes it merges the args with the previous middlewares, other times it overrides the previous ones. See the figure, I chain ->middleware('a')->middleware('b) in all three cases, but the outcomes are different.

Is there a reason why it has to override the previous middlewares for groups and resources? Or can we maybe make it more consistent at least for 11.x?