There would be the same amount of choices whether we had one unlock or two as I've shown in my post.
Right now, you could either have two classes or three. If we did this change, it would be the maximum amount of classes everyone can have is three and you are allowed to have two omega tier classes.
There wouldn't be less choices unless you account for tier. But even so, there are six total classes, not four. For humans, there are five. Which gives a lot more choice than you listed. By the way, don't be already share a lot of combinations? Why would it matter if we had more similarities in tier?
While I'm not saying I support the idea even now due to balance purposes, I'm still confused as to how this would affect anything except for power issues. Y'all don't factor in the popularity of classes either which actually cuts down on the numbers if you think about it.
This is how I look at it:
Warrior & Magician are the most popular classes.
Assassin & Beast Tamer are the middle ground.
Body Manipulator & Ranger are the least popular classes.While it can be argued that Assassin and Body Manipulator could be moved up, my point still stands. No matter how your popularity list looks, that factor limits the choices as well. But placing them all on an equal stand will give you the same arrangement possibilities every time which, again, I had calculated in my post. While I am no mathematician, I know my permutations.
There will be no loss in arrangement possibilities.