In the example screenshot we can se "Send with Gmail" and two options "Send for Signature".
Firstly, I don't use Gmail for sending email, so this option just occupies the space there for nothing. Suggestion: Add an option to replace Gmail with Outlook or any other major Email provider. Maybe launch a desktop email client even.
Secondly, we have two "Send for signature" options. What's the chance the majority of people use two services for signing? Those services can be accessed from the "Open" menu, anyway. Suggestion: I would like to be able to add my own option from the "Open" menu, instead.