I want the same kind of sensor features the Su-57 had to this aircraft, if not at least photonic radars based on operating frequencies of the Yakroma.
https://basicsaboutaerodynamicsandavionics.wordpress.com/2016/03/02/rwresm-and-passive-geolocation/
I know this has to be a feature of the Su-57 which is what I want for this new aircraft and that is turning the side radars and Himalayas system into passive detection mode while having the main radar nose active.
If an aircraft tries to do an S-shape maneuver the passive radar accuracy would be completely off but it wont be completely off if the aircraft just flies a straight direction towards you.
Problem doing S-shape maneuvers in front over another aircraft just using active radar tracking will result in the sides of the aircraft being exposed with huge RCS returns, but to stay stealth towards an adversary's active radar you fly straight towards to them.
I am sure it is a function of the MIRES to change the side X-band, L-band and Himalayas system into passive tracking while having the radar nose beam remain active(function like Yenisei radar) meaning your adversary aircraft is fucked whatever they do. I am 110% sure a certain user is going to be pissed here because I am using their blog for my own means which they usually love to go spam a bunch of pictures from.