Hi @nrmlb thank you for this feedback! I have just requested this feature internally and will get back to you on this thread when this is live.
As a workaround, in the meantime, you could create a new query that only returns the columns you want to be showing in the filter - create a new table that returns this new query's data and hide that table.
You can then add a filter component and link this up to the new, hidden table.
You would then include the filters from this component in your original query (that returns the data in the unhidden table).