File Upload Limit - The file upload limit needs to be increased and not be separate for images and documents, etc… 25MB is very small these days. Personally I feel the upload limit needs to be 500MB -1GB and a simple drag and drop for any file type.
Address Field - The Address field is very basic and doesn’t autocomplete or have options for the city, ZIP/Post code, etc… If it could autofill, that would save time and clicks for clients.
I’m sure there are other limitations I’ve not discovered yet, maybe others could chime in with their own experiences.