The only way I see being able to have a vast number of skills when synched down and be fair is.

Have a every skill 1-70 starting at level 1 for each job/class.
Then everything upgrades like Bio in potency and scaling.

Fast Blade I- Level 1
Fast Blade II- Level 20
Fast Blade III- Level 40
Fast Blade IV- Level 50
Fast Blade V- Level 60
Fast Blade VI- Level 70
Fast Blade- Etc,etc

I am kind of not liking that even if it is boring or slow in starter levels. Once we start screwing with progression, they might as well make everything available at level one and get rid of levels(I like levels, not this world scaling thing the hip mmos are doing now). I like having something to look forward to even when now is not going so hot.