Last major an internal report got them to buff the Harriers FM slightly, however they did not even buff it enough to match the sources provided.
The Harriers are a staple plane in many nations now, the Sea Harrier forms the back bone of the UKs fighter lineup from 10.7-13.0 and yet after years of them being in the game they are still terrible.
Their poor performance is in no part related to their IRL capabilities but gaijin not modeling them correctly.
They need substantial buffs too:
STR
ITR
VIFF-STR and ITR
And AOA achieve ability.
Single CM release vs 2
Wanted buffs:
Sooty exhaust fixed to smokeless exhaust
IR signature reduction
AIM9L dechirp
EEGS for the FRS.1
Better RWR for FRS.1 squadron
Sources and reports:
ITR (1)
https://community.gaijin.net/issues/p/warthunder/i/PKQ9EkFkhaoz
AOA
https://community.gaijin.net/issues/p/warthunder/i/cmIBoF281HPk
Single CM release
https://community.gaijin.net/issues/p/warthunder/i/KEQ0kPAn17nW
VIFF ITR
https://community.gaijin.net/issues/p/warthunder/i/0Og5A3B8DcWb
STR
https://community.gaijin.net/issues/p/warthunder/i/0pjyC4bjkc9h