''You need to add new classes that have same number of ability/attribute/talent points as defined in that properties file for classes to show up.''
Meaning, you wouldn't have more points to spend.
I too am trying to find a way to give a few points to my character, there might be a way to include it in one of the scripts that inits on arrival at Cyseal but i haven't yet found the command.
Cheatengine didn't work and trainers i do not trust.