If possible I would like to a see a feature that could tell you how many bytecodes per millisecond the devices run at. It would help those who don't have the phones that others have tune the emulators to simulate those speeds.
Such a statistic is meaningless
The slowest operation in any game is almost always rendering, and as such is done almost entirely in native code.
There is no simple metric that can be used to compare device speeds (and calibrate emulators to said speeds)
Even JBenchmarks extremely abstract metrics, are still horribly inaccurate on a great many devices.