Well it's likely possible but the question is really whether or not I or one of the other scripters will have time to get it to work in a different way.
The primary problem here is that there are two different time scales that sort of have to work together. There's the "online" time scale which is what passes while a character is in-game. This is the 10 RL minutes per level thing (or 2 reflections per level), which if one were to wait it out, ends up being a lot shorter than 10 hours. Then there's the "offline" time scale, the 10 hours of not being logged in, which is clearly longer than the in-game reflections time.
So the problem is getting those time scales to play nice with each other in the face of multiple potential logins/logouts, during which time will pass at different rates as it applies to reflections.
The system would need to be able to handle cases properly where a reflecting character is logged in for an hour, logs out for 5 hours, logs back in and crosses servers, stays logged in for 30 minutes, logs out again, etc.
So possible, yes. It needs to be done though in a way that's reliable and accurate regardless of logins/logouts.
To be honest, the priorities and hopeful timeframe for the next update don't have a lot of room for a project like this. We'll keep it in consideration, however, as there is a valid point to your comment.