Edit: Sorry, did not read your post well enough. So, no, apart from the Smooth PEI, I am not aware of the kind of alternative. May need to look at 3rd party plates.
I would also love a subtle texture. I love the classic BuildTak surface for PLA, that I used on my old printer. Tried to replace the coldplate sticker with a BuildTak sticker, but it didn’t work at all and stuff was just unremovable. Any try to increase the first layer distance in the slicer didn’t succed.
I haven’t seen any similarly textured buildplate yet.
I think that would make it even worse: The textured plate needs a slightly closer nozzle, because it senses the tops of the bumps, but has to set the nozzle height to the average of tops and valleys. So they put it 0.05mm closer than they measure.
I copied this exact part from the gcode of the structured PEI into the gcode for the cool plate but reversed the correction to -0.05mm. I played a bit with the value but it didn’t help much and I lost motivation.
It would be really cool to have a PEI plate with that structure. Maybe there is a way to treat a smooth plate yourself? Maybe sandblasting with very small glass balls? Or pressing a BuildTak Sticker into a smooth PEI plate, using it as a punching tool
Hmm, my idea is, that the nozzle tip is rather large compared to the texture. so it would touch the tops first. But it would be totally worth to just try it with the structured PEI selected. The Buildtak is already dead anyway. I will do that as soon as I find time and report here!
If you want a texture in between the smooth and textured an aftermarket PEZ/Polyura plate has that. Not sure if the new supertack plate is similar or not.
Also if you wore out the engineering plate like me, you can peel away the cool plate from the other side and it will have an engineering plate underneath the cool plate sticker.