I have found the existing dynamics indicator quite useful but it has the refresh rate of it too slow.
If RME want to ensure low CPU usage in certain scenarios I would recomend to add a "hi performance" option that would tax the CPU a little more but force much higher refresh rates of all indicators.
As far as I remember the GR meter is planed to be implemented into TMFX, my recommendation is to add it alongside the level meter on all channels, to have a clear and fast overview on the dynamics.