so far tho ive gotten 255 badges from pcd but nothing happens, i can quit the pcd like usual, people probably collected the rewards from the big cat all at once with the 255 on, so they end up having more than 500 etc, but since many have got problem its best to avoid it, coz we never know when the dev going to change the conditions.
as for negative opuses and trestises, at the moment there isnt any problem, but in the future if the Dev decide to add a simple line of coding that will check if negative value exist or not, accounts with negative opuses or treatises can get blocked easily.
Might or might not happen, but why take the risk? if you want light/shadow pts, the hard way is check the walkthrough where to get em, and turn x255 when you pick it up from the chest or from Cats in PCD. the easy way is to cheat the light/shadow pts, exploit the acc. so far not many knows and its safe for now.