Going off my airship idea as an early bomber could could we get an early aircraft tree as well. I was thinking of adding 2 more steps before hitting monoplanes because Equestria at least show wise was in the 1870-1900 of crazy flying machines like the US was. I thought that this would make the Great war more interesting with them pushing for a more modernized force than Equestria but Equestria able to muster numbers of tech for the begining. I feel this would be more interesting considering the ships feel extremely old from the start of the game and having biplanes 2 steps before monoplanes I'd feel makes for a kind of rush for arms for Equestria as they are a more antiquated nation and have no need for a modernized air force like the U.S., England or France at the start of World War II. But the Changlings would because they want revenge their AI at the start of the war should just reach monoplanes with the Equestria AI being one step behind or whatever based on player actions. Looking at the JU87 in real life was extremely slow and outdated by the end of the war.

As for Jet's and late game aircraft, I always wished there was more there. Like Equestria was able to continually expand into different jets of different roles. More than just fighters and bombers. I forget which mod but one adds multirole jets that can do both air fighting and ground attack which is a cool concept for late game aircraft.