If your overall % are lower you will taste some malt but it is not really a lead flavour more like a accent imo. I Have never played with it that high so I dont know what the result will be
If you have nuts of some kind (yeah I went there ) or more specifically hazelnut or/and almond, and have some white chocolate or marzipan they do support chocolates, especially milk chocolate if you’re aiming for that. They also bring out certain other notes in flavors like milk or malt and other creams.
Same goes for regular vanillas like Tahity, bourbon, classic, French vanilla. You could add that to your ice cream to bring out the vanilla a bit more. I would give that a thought, maybe that gets you closer to your goal.