my point about the su37 is that it has the best features of our fighters roled into one. it's got the speed, payload and range of the 15/14, the maneuverability of the 16/18 (and a whole lot more), and a lot of good engineering. as far as avionics and weapons go, im no engineer and dont know a whole lot, but it seems to have it (at least from an air-air point of view, and with rearfacing radar). ground targeting it is lacking, but i cant imagine it would be overly difficult to reconfigure a design in these aspects to fit what youre looking for.