About the mouse-controlled new reply feature

Hello,

The reply feature can only be mouse controlled, as you need to click to reply.

So I had an idea about making a keyboard version for example: pressing shift makes the next key select a profile with the newest message which has the key pressed in the start of the name. 

I've added an example image of what i mean below if i had pressed shift then d (not holding shift)


My idea is'nt specifically saying "make a feature with that uses shift and any key for faster replying",
it is saying make an easy keyboard version you can use any idea for this feature.

Thanks for reading and considering this idea!