Would keep the grid closer in championship positions and stop Hamilton from running away with it I like it. Basically forcing Hamilton to start last gives him such s disadvantage that your more likely to win a race starting slightly higher up as your in a car only just slower than the Mercedes should be very difficult to pass. While much faster than the current midfield teams and bottom teams which will all be tripping up over eachother. So currently it should mean that you get a much higher % of Ferrari and red bulls on pole on Sunday and wining the races until Hamilton starts not last due to losing his lead in the championship.
Also one would assume the undercut would be great as you have a naturally faster car and quicker tyres. With the overcut being even less good than it is now.