Hey there, as I've started to get more into drifting, I utilize race chrono to collect data for some fun analysis/stats.
I made the mistake at the last event of doing a full lap without checking the coolant gauge (normally only glance at it on the "straight" since i'm normally just too busy with the wheel to have a chance to look. Turns out I overheated a good deal. Coolant temp started at 220F (warm, but fine), and managed to hit 243F in a single lap, when I spun. Luckily there was no damage, but I found out that apparently my dash gives 0 warning/alerts to an over-temp condition. Had me think: racechrono has this data, and even lets me put up OBD/PID data on the dashboard. How about some sort of "alert/warning" system that you could set alerts for specific cars. Select the PID of interest, select a low or high threshold, and an action such as make a warning sound, flash the screen red (I keep my phone always in my vision, so while I might not be actively looking at it, I do notice the green/red delta lines while driving), etc.
I get this is probably a bit outside of the scope of RC, but I definitely could see some value for something like this since apparently my stock dash does not do this. Clearly, I need to pay more attention to the gauges, but it can be difficult to check multiple values while trying to hold angle or manji :) Just a thought!