Captions should be under audio or as a quick action on the tool bar

I want to add captions. I want to click on audio and add captions is an option. The current process is designed for adding captions to finished products not part of the video production process. To add captions to something I just made in Express, I have to download and then reupload and then edit in a new file. This is very disconnected from the process and my drive is full of incomplete projects. I have to go and delete constantly. If you are promoting cloud usage, the caption option should at least let us select from Your Stuff. Thank you.