Keyboard functions during voice recognition

Would it be possible to have some more keyboard functions available on the voice input screen? I hate having to keep switching back to keyboard to add things. Ideally I'd like to keep the whole keyboard on the screen!! But at least a full stop, comma and enter keys would be super helpful!! I know I can say "full stop" "new paragraph" and "comma" but sometimes it takes several attempts before it stops typing out "full stop"