Different options for immediate and gradual tempo marks

I understand Dorico’s treating all tempo marks as one category, as one mark generally applies to all staves equally. It’s also a welcome feature that one can choose on which staves to show these marks. There are many situations, however, like in a piece I’m now working on with several instruments, voice and piano, in which I’d like the immediate tempo marks to show only above the top staff but the gradual ones also to be shown above the piano staff. This is often done in commercial editions. As it is now, I can either choose to show system objects above the top staff and above the piano staves, but then I have to drag the immediate tempo marks off the page, or to show system objects only above the top staff, but then I have to create the extra accel. and rit. marks as text objects above the piano staves. Does anyone have a better suggestion?