This was a ridiculously simple mod to make (only a quick settings change in the CK), but there didn't seem to be another mod out there that did just this.

I received a request to make and release such a mod, and there may be others that would benefit from it, so here it is:

No Psychic Lock Knowledge
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By jackstarr


This simple mod removes the visual tag that lets you know if a lock is apprentice, adept, master, etc. - now you need to try and pick the lock and judge the difficulty level yourself!

No difficulty settings are changed, it just removes the visual tag that gives you some sort of psychic prior knowledge before you even attempt to pick the lock.

This mod was made by request for gdsmth.

Thanks to Ka3m0n for listing it on Skyrim GEMS so quickly!

Download: http://skyrim.nexusmods.com/mods/44115