1) There is no way that all the combinations will be even played, let alone tested in CBT (or ever for that matter).
Same with the old system… there were useless class builds but what is the problem??? Nothing… You are not gonna lose anything…There was a lots of problem with old system because it was too restricted… It was very hard to level with supporter cleric class in beginning because they werent strong enough… Now you can start with strong Cleric build without losing important skill later in the game… This is just one explains…You are saying there is no sacrifices?? If u are backtracking it means you are gonna sacrifice higher leveled ranks… That is pretty huge sacrifices…
2) This would create endless amount of “balancing” work for devs and they don’t want that.
Not every combo should be good build for everything…