Lets hope they can solve most of your issues, From my knowledge of communicating back and forth and looking at small forums that talk about the Road Top, I believe that Road Top 8.8 does not have a RTC embedded into their devices, so it is impossible to set a time of day if you want Night mode to activate. However, having to keep the brightness setting after reboot, I do think is possible. The emphasis on Road Top's Youtube comments kept mentioning very small change. They did however promised to have some of things the community all over the place requested on their next iteration, and I hope they keep their word on it, example: light sensor to trigger day and night mode, but do take it with a grain of salt.
For now, I cannot imagine how many different custom firmwares Road Top is making to each individual customer. I know for a fact they aren't going to carry over my firmware's to yours if they do make one for you and that is going to be a mess. My speculation is that Road Tops internal memory isn't enough to store all the data that we request to fix.