While there have been no requests for the support of this video format, there have been a few threads of people who were having trouble capturing old games, not knowing that they were dealing with a 240p signal. Link 1, link 2, link 3.
I think the reason most people don’t know their old games output a different format is because most devices (TVs, VCRs, capture cards), just treat these signals as interlaced, and do just fine.
well anyway, thank you for taking the time to address this issue, and I do hope that you guys will implement this sometime in the (hopefully) near future, as I want to be able to get the best quality I can, even if the games are old and low res to begin with.