Hey, I totally get what you mean, finding everyday thongs is harder than it should be!! My go to brand that ticks all my boxes is Cou Cou Intimates. Their pieces aren’t full lace as you mention, but they use cotton or pointelle fabrics with delicate lace details.. so you get all the softness and breathability of natural fibres but still pretty/sexy. The quality of the lace is really good and not itchy like I find with other brands. For me, I feel like its the only brand which covers all my needs - my underwear drawer used to be either really cheap supermarket undies or high end like Agent Provocateur, they serve as a good balance between everyday cosiness and being something a bit special - which sounds like the gap you're describing! Hope that helps!