This suggestion is to remove the perception notification above all the characters head. The whole idea of Perception is if you notice something or not. By having a failed Perception Check appear above the Characters the game is telling the Player that they are missing something outside of the game. This removes immersion and makes the player actively try and achieve a positive perception roll with all the characters or re-summon familiars till you succeed.
I suggest you remove the Perception notification of either failure or succession. The only thing that should happen on Succession is the character comments out loud and the item then gets highlighted to notify the player. (If the player misses the item then that just means his Real Life Perception was to low) On a Failed roll there should be nothing that pops up. No failed Roll notification, No Comment, Nothing. The Characters should just continue on like they don't notice anything.