A research project, if you will.
Imagine, if you will, a manifester with the ability to create pseudospell slots; i.e., it would, in the morning, spend 1 pp for a 1st level slot, 3 pp for a 2nd level slot, etc... This would allow you to apply metamagic to powers.
Now, answer the opening question, if you will.
Now, imagine this addition: this class has the ability to, instead of learning a new power, learn a spell that would work in a similar way to how a StP Erudite "casts" spells. Assume the class has a very limited number of powers known, on the order of ~20 at level 20.
Now, answer the above question once more, please.