No need to fumble about with the Gloster F5/34 imo, the poles would have been perfectly capable of building a competent and comparable fighter if thing would have a bit a little different (especially inspired leadership/sound technical decissions), after all they created the PZL-37, arguably one of the best bombers of it's day, and much harder to design and build than a fighter. Even if they would have trouble at first with sourcing a retractable undercarriage, like the czech did with their B-35 they could still fly a fixed gear low wing monoplane in 1936 with a GR14K engine (speed 430-450kph) and build some of those first, then switching to a GR14N retractable gear fighter, some with cannons too (speed 500-530kph) by say 1938. Probably export orders will flood for their low wing fighter too replacing some OTL PZL-24 orders, but like i said, better to keep as many of those as possible for the AF when things start to look gloomy.
Considering that in OTL all the poles had were completely primated PZL-7 (327kph) and PZL-11 (375kph), off the top of my head well over 200 in total, can you image what effect would have having a similar number of far faster and better armed machines? Yes, this will not save Poland from defeat, but the germans will lose at least twice, and possibly even more aircraft, perhaps 500 or 600 not to mention loss of aircrew.
Btw, i think Poland has enough pilots already to man 300 modern fighters as suggested above, and even more so if they would avoid somehow very wasteful decissions like building large numbers of PZL-23s of a flawed concept (250 of them!) or giving top priority to bomber development. A leaner line and bomber aviation and an increased and especially MODERN fighter (PZL-50) and fighter-bomber (PZL-38) forces is the best they could and should have done.
Considering that in OTL all the poles had were completely primated PZL-7 (327kph) and PZL-11 (375kph), off the top of my head well over 200 in total, can you image what effect would have having a similar number of far faster and better armed machines? Yes, this will not save Poland from defeat, but the germans will lose at least twice, and possibly even more aircraft, perhaps 500 or 600 not to mention loss of aircrew.
Btw, i think Poland has enough pilots already to man 300 modern fighters as suggested above, and even more so if they would avoid somehow very wasteful decissions like building large numbers of PZL-23s of a flawed concept (250 of them!) or giving top priority to bomber development. A leaner line and bomber aviation and an increased and especially MODERN fighter (PZL-50) and fighter-bomber (PZL-38) forces is the best they could and should have done.