The BF 109 F-4 Trop has been in a rather weak position at BR3 for a while and has mostly been collecting dust in virtual hangars, armed with only a 20mm cannon with 200 rounds and two 7.92mm machine guns and no bombs so purely a fighter, but however, the C. 202EC is generally better in this role despite being a BR lower, with two 20mms with more ammo per gun than the Bf109 F/4, and 12.7mms are in place of 7.92s. In comparison, fighters at the same BR, the P51D and recently added Ki-100, both have dual 250kg bombs and a much better armament of guns, or either 8x HMGs or 2x 20mms and 2x HMGs, and are much better planes.
To make the BF 109 F-4 a more appealing vehicle for BR3, I have 2 buffs in mind that could come directly from WT, so would be fairly easy to implement. The first is to give the plane two gun pods mounted on the wings that have 15mm cannons with 125 rounds each, which would improve the combat performance, and to give either the loadout of 4x 50kg bombs or 1x 250kg bomb, which would make it able to be a viable dual purpose fighter.