i agree with Karnak that the amount of ords that P51s (as well as others) can carry is a bit excessive and that 1000 pounders should have perks attatched so that dedicated ground attack planes have a role rather then the cooky cutter P51 'look I do everything' super planes can get back to air superiority roles - which is what they did during the war for the most part.
As far as the 205 with a bomb - I don't see how it would break the game - spits can carry bombs but almost never do, as do a whole host of other planes. Of course this is about historical validity - and in the case of the Axis - there were lots of 'rare' things towards the end of the war when the industrial machine was breaking down and ground crews and pilots were improvising more and more in a desperate attempt. Easy enough to just bolt on a rack and put a bomb on it if that was needed and I am sure that sort of thing was done a lot. The criteria for making it available in-game relies very heavily on 'official', 'well documented' and 'tested' and for the axis, that means 'we' lose out on a lot of options.
my 2 p