Double clicking "new tab" for speech input

It would be great if when the “+” (new tab) icon is pressed, that on the new tab, the “+” icon (same screen location) would be replaced momentarily by the microphone icon, for voice input. User would basically be double-clicking (first time in the original tab, second time in the new tab), and instantly be in speech input mode.

I have the bottom buttons setting selected, which means that I have to navigate up to and touch the address bar, and then go 2/3 the way back down to the keypad to select the microphone icon. What I’m suggesting would greatly simply speech inputs/searches.