My pet peeve is that while LEDs have exceeded 200lm/W years ago and 80-90% efficient driver circuits are easy to design, we mere mortals (unless we live in Saudi Arabia or whatever, I forgot which country it was exactly where efficient LED lights are available) have to buy lowest tier factory floor crap LEDs.
For a bulb, the available range is 80 - 105 lm/W. From crap to just barely acceptable. But it gets worse with fixtures, much worse. I am looking for either self-adhesive LED strip, or slim aluminum cased fixture to install under the kitchen cabinets to light up the work areas. I looked in every local store, including Bauhaus for example which usually does not just sell cheap crap but have decent offerings. And what I found out, almost all products are 50 lm/W and the best ones, good brands, are approaching 80 lm/W. There is no excuse for this crap, these products do not have fancy diffusers or shades which would explain the poor efficiency (but at least give some visual improvement).
I have set my mental limit so that I absolutely refuse to buy a LED fixture below 90 lm/W so no kitchen work lights for us, then. I need to import these from more developed countries, or design and build my own LED lights.
And I'm even willing to pay, but high-efficiency stuff is simply not an option, at any price, even when we are in the middle of energy crisis. Go figure.