Even if it were personalized, there still shouldn't be this block. There is a block in the Extra Utilities 2 mod called, umm, the player chest?, that allows you to specify which slots in your player inventory are used to push items to the player, pull items from the player, or be excluded from consideration. In theory, this was a relatively good idea but in practice the entire rest of the game (including all mods) has no reason to care where items get placed when dumped into an inventory AND the order in which items are slotted is not universal to all feature systems.
This standing hopper block would suffer the same issues, and given the function of this block and the nature of player automation trends this will no doubt be attached to a relatively large storage system that will probably have some sort of overflow protection built into it. Any accidental items would basically be rendered inaccessible without tearing apart the system or, worse, the anti-overflow will kick in and the item gets destroyed before you can intercept it.
edit: I like the out-of-the-box thinking here, but this is one of those times where you need to overly explore all the obscure aspects of the idea's impact (way) beyond the intended use/reason for suggestion. A good rule of thumb for vanilla suggestions is that generally modded has already come up with some sort of solution (in many cases, this has been accomplished many years ago), thereby giving an extended period for "bugfixing" to root out issues that might not have been thought of.