The fact that there is no mechanism in place to change things (that seemingly no longer apply/make sense) doesn’t seem like a problem with the system?
The reason I bring this up is something I have grappled with my rebbeim about this. for 2500 years there were tannaim/amoraim/rishonim tweaking halacha, most of which applies halacha li’mayseh today. Weren’t they “reforming” (i know…a very bad word 🙂 the direction of the torah.
I am not saying rejecting torah she’bal peh, all i’m saying is that if halacha is a living, breathing idea why did it stop changing (except to make life HARDER) 150 years ago?