Yeah, that's a good idea! I was thinking of holding off on icon work until the vanilla icon update to 64x64 which should be coming at some point during 0.17 experimental, but I might take a look before then if it takes a while.
Please don't.
My mod https://mods.factorio.com/mod/RealisticOres supports your mod and Better Ore Icons supports Realistic Ores. If you add support for Better Ore Icons, it would create a dependency loop. AFAIK, that would prevent the game from starting because it couldn't decide which mod to load first.
It would probably be a better to talk to Geekinacave and ask them to add support for stacking.
I updated the mod to add compatibility with this one. Please bear in mind i will wait to an stable 0.17 version at least before keep modding; since this is more like a hobby for the little free time in have between work and study.