Recently I've been wondering just how much Super Training is gonna affect the EV spread. Since EV's can be effectively trained and changed via Super Training and Core Training, this means that EV's will no longer be a fixed parameter, and they can probably be enhanced beyond the 252 limit with Core Training.
This being said, it would probably be best if we fixed the Gym leaders EVs to allow an equal playing field for all challengers. If we changed our EVs around anytime a new person challenged us, then it wouldn't be fair for the other opponents.
Current PC Build
CPU - i7 8700K 3.7 GHz (4.7 GHz turbo) 6 cores OC'd to 5.2 GHz with Watercooling (Hydro Series H110i) | MB - Gigabyte Z370 HD3P ATX | Gigabyte GTX 1080ti Gaming OC BLACK 11G (1657 MHz Boost Core / 11010 MHz Memory) | RAM - Corsair DIMM 32GB DDR4, 2400 MHz | PSU - Corsair CX650M (80+ Bronze) 650W | Audio - Asus Essence STX II 7.1 | Monitor - Samsung U28E590D 4K UHD, Freesync, 1 ms, 60 Hz, 28"