Hah, big issue with feature film creation of course is budget limitations. Theres the vast difference between what you’d like to do vs what you can do. Getting big studio backing results in much less creative control then if you fund as much as possible yourself or have a massive established name. Short films are much easier to fund yourself but are only so long and are pretty much a taste of plot and skills available.
Personally I see shorts as a way to gather crew and skills and concept ideas to see if an idea can work and to build reputation and content. Doing a full feature is definitely the goal but outside control is an issue that requires a lot of thought before bringing more concrete work to the table.