The original release used to drop like a stone with full flaps. Dropping to idle over the threshold was hair raising. It’s not quite like that now, and it does seem to glide a little better. As to its realism, I’m not qualified to say.
True it does not, but one of the fun things you can do with the Saitek Panels, and a copy of SPAD.neXt is make your own guages. So in the case of the missing EGT gauge, let’s just make one, by adding the appropriate value to a display that is not in use, in this case the right hand lower display for ADF:
Readout is in the default of Celsius, but SPAD can also do unit conversion if you want:
Here’s what it looks like in action, from idle to full power. Excuse the shakey cam, I’m recording this with an iPad! 
It doesn’t have a radar altimeter either, but it could!
Moving outside the realms of realism here.