In GTL add the ability to set each value to the maximum value (for iv 31) by simply clicking the minus and when on max value the plus to get to 0
Add the VGC format to PVP, it is shorter, and quite popular (would be a selling point for a lot of people to start with pokemmo or to stay on it instead of seeking out other platform to play it). For a quick match on the go it is perfect. For ranked and/or tournaments a best of 3 makes variability less of a factor (and rewards skillful play), which is feasible because of the reduced time per match.
Decrease the barrier of entry on PVP to ensure a higher player count in PVP, turn off consummation of single use items in PVP.