You can edit the \CharacterCreation\ClassPresets\Whatever.lsx file and add/change starting stats if you want (and edit skillset.txt, Equipment.txt and Requirements.txt if you want to add Phoenix Dive as starting skill for example).
It is a bit of a palaver though extracting everything and probably easier to use the respec mirror mod.
I tend to not bother any more but recruit companions based solely on what civil or talent they have - for example pick a Witch to be an Archer just because they have Persuasion (and then just live with the pointless leech talent).
It is a bit silly and requires checking every class - it would be far preferable if you could just assign all points - as everyone else has already said I know.
