The variations of the BF109 Fs could mount experimental RZ.65 rockets (4 per wing) intended for use against aircraft (fun fact,the Wfr.Gr.21 rockets also were made for use against air)that are quite small in comparison to M8s (they have 1.95 kilograms of explosive equivalent while these only have 156 grams).this could be something to make these planes interesting to play that wouldn’t affect balance too much.