Correct, I try to emphasize the unusual time setting and also remind opponents in chat, and sometimes neither works.
I can deal with this myself, no big deal.
The idea is based on the assumption this is a low effort to change, same as this one below.
In this particular case, there might not even be a niche market for Slow Live Games. But think about it, if Fox offers custom game page, with its large user base, nobody will seek SLG on OGS. So if it is indeed a low development effort, why not promote this type of games on OGS, like create a Short Long Game section?
Only time will tell if it works. If it does not, well, what do you have to lose. 