When you say "respond by text", are you referring to the "Message" button when answering a phone call?
If so, I think that option needs to be hidden or minimized, along with "Remind Me".
99.9% of the time, when I get a phone call, I want to answer or decline, so those buttons should be bigger and more prominent. I would rarely if never use use the "Remind Me" or "Message" options. But in IOS 7, these are all the same size.