Love the redesign of this UI from the older version of LTN combinators! And there's a high resolution version of the base combinator icon when placed in game itself.
But the item icon in the crafting menu/logistics requests/etc elsewhere uses a blue-tinted version of the 0.17/0.18 combinator icon before they did a high res version. It's blurry at 200% interface resolution like a lot of older mods. Can you update that graphics file? I did a quick hack job tinting the current combinator icon blue and replacing ltn-combinator-item.png because I was fed up but it doesn't look as good as it would from a mod author who knows what they're doing! Thanks.