Coolant temperature gauges have been buffered for awhile; I know my X3 shows the "normal straight up" position even if it isn't fully warmed. Around 78°C is when it approaches the mid position, and the temperature can waver between 86-98°C while driving in the M54 engine. With these newer engines that run even hotter, my mom's N52 runs anywhere from 92-107°C while driving regardless of outside temperature.

Nonetheless, BMW heard your complaints and is bringing them back. The 7er and 5er are examples of the new generation of gauges.

I prefer the oil temperature gauge if it has to have any sort of temperature gauge- more useful than coolant temp in determining when it's safe to rev beyond 5000rpm. However, I still believe that the energy control gauge is more meaningful to me on a daily basis.