An amateur band at 40MHz would be really useful as I suspect the F2 MUF has been in this region several times in the last few years. There are a very few beacons around 40MHz (UK and Denmark only I believe) but wouldn’t it be good to have even 100kHz around this frequency? Sadly it is very unlikely, but I would happily lose 100kHz at the top of 10m in exchange. It would also be a very useful Es band.
Somehow I can’t see this happening, more is the pity. The world of radio science would really benefit. This would have been so much more useful than 146-147MHz recently released to UK amateurs by NoV. I know a handful of UK amateurs are trying narrowband DTV but the 2m band is mainly Japanese “black boxes” and is mostly white noise in most areas.