I still set up basic trappings in Illustrator for vector artwork which InDesign respects until the printer overrides the settings. 🙂
But, for anything actually done inside InDesign, I don’t even concern myself except for watching where ink totals might get past 220% because of various items overlapping.
I’ve never even bothered to try and override or find out how because most of the precise matters are taken care of by the RIP at the printers or pre-press department anyway.
Plus, the general choke and spread that is utilized today in the major programs normally provides ample trap.
I guess if you’re getting into mixing inks and a wide color palette, perhaps you can copy/paste the pieces into Illustrator and set it all there?