In order to promote tournaments with customs being legal, it has been proposed that every character should have 8 slots with pre-built custom move loadouts to cut down on the extra time investments/costs TO's have to deal with. Most characters have 2-4 common/optimal loadouts anyway and maybe a few more situation ones. Using these pre-built slots, most of the hassles for TO's regarding the logistics of custom moves can be eliminated.
All that needs to be done is unlocking the customs once on a 3DS, and then the TO's can transfer all the common loadouts to every Wii U setup beforehand. In order for this to really catch on, the community has to agree on the 8 pre-built loadouts for each character. What's important here is that not every single possible combination needs to be included, only the best few. While the last few slots may be debateable, what's important is that there needs to be a consensus and that compromises should be expected. Even if your preferred loadout isn't one of the 8 chosen and no one at the tourney has a 3DS with your combination unlocked (highly unlikely worst case scenario) it is better than no customs allowed at all for nationals like APEX.
Perhaps a discussion on which 8 combinations are best for Ganon should take place in a new thread?