I know there is already a delay sending option, which is fantastic, but I think you should emulate the GoSMS style of delay sending where it moves the delayed message into the actual message and you can write another message while it's going through the delay period.

Currently, you have to wait for the message to pass the delay period before you can write another message.

In GoSMS you can send the message, and while the delay period is still passing by, you can write another message and hit send and it goes into it's own delay.

This isn't a big deal but it helps speed up being able to write multiple messages and still use the delay send feature.