I'll just hijack your thread, because it seems we both have the same question. Especially useful for me would be the option to have Cura iron the whole flat layer before printing the text/details. The model on the right is the best I've been able to achieve so far with tuning the ironing settings, but since Cura won't iron the part where the details will be printed, you can see the printing and ironing artifacts around the outlines.
Is there a way to have Cura basically treat the base as a "complete" object, printing the details on top of it? As in the screenshot, I'd love for the layer right before the details start to be completely flat, disregarding anything that comes above it.
Setting the top layer count to be equal to the layers of the details will create half of what I'm looking for, but the ironing still goes around where the details will be printed (slightly visible in second screenshot).