Hawker Tempest

Seems quite nice - a grindable counterpart of Seafang - one of best premium planes.
Stock model lacks everything - a bit of maneuverability (Tempest Mk. V airframe make that even), considerable amount of speed (top engine reduces that difference to 10 km/h), and armament (top cannons again make that even).
Fully developed version is 10 km/h slower but dives faster, has 200 meters less optimal altitude.Has also worse roll rate and higher stall speed, although lower optimal airspeed suggests considerable dogfighting abilities.

Since stock plane flies ok, my first pick were cannons, to be able to reach stronger and harder - 115 dps at 760 meters instead of 100 at 720, probably better bullet velocity.
After that I think about engines, fuselage and finally bombs and rockets.

Placing plane developed in 1942 at the same tier as 1944 project is ridiculous, and as I earlier wrote - at tier VIII there should be Hawker Sea Fury.
Maybe one of reasons is that it is quite similar to Lawochkins (parallel evolution leas to 2 kinds of propeller fighters - bubble canopy and high power inline or radial engine), and it would show how poor Lawochkins are (La-11 in current meta is so weak that it was withdrawn from shop).