The first forty invested EVs now have three times the worth,

>>31716321
Literally why would you want this?

>>31716321
It doesn't.
>252 spreads now get extra points on the first 40 making them more minmaxed

>252/252/4
now
>252(with the starting 40 because this is your best stat)/252/4

>>31716367
Into each stat. So every stat you put 40 into essentially another 80 appear out of thin air.

>>31716321
you might see some defensive spreads forgo full HP for the free 160 in both defences.
effectively for the cost of 80/40 HP EVs you can get some pretty ebin bulk in the off stat (or both in the case of quickwalls and bulky offence)

Some sets drop 40 or 20/20 from 1 stat to invest in probably HP.
Any set that runs 36/32 speed to hit or break speed ties with common sets will bump that number up to 40
Little Cup is full on power creep