Removing the exit option takes away the freedom for users to leave, forcing them to either complete the form or risk losing input data.
Users might want to leave your application for a moment to return later.
I would keep the exit button and provide the option to 'Save draft'.
This could work, but it will likely need additional affordances.
Be default, this does not have any discoverability: users won't know that three different actions are possible and may become confused they can't consistently trigger the desired result.
That said, if you used icons or labels to indicate available actions, there is no harm (and usually a ...
If I understand your questions correctly you would like to add more navigation menu items, on the bottom navigation bar in your app, than is possible (visual).
What we did in a concept was:
- Show 4 (most used) items in the bottom navigation bar
- The fifth item was a hamburger or submenu (the 3 dots) with the title 'More' on the most right side of the ...
Nathan Rabe's answer is an improvement on your idea because it wouldn't work without an explanation.
But I'd suggest you another way (seen before on digg reader - unforunately discontinued)
Instead of uncovering the actions via swipe (Cristian Negraia's answer), you can trigger the actions directly.
Swipe left -> Mark as read
Swipe right -> ...