Weather, helix, and cure IV/V

[Rambus]

I am just wondering why jobs on /SCH can have the same spells as SCH main expect for thunder weather. I looked at the other thread about the comment on stormsuge merits and I can understand the complaint over that as well because of this issue I am posting about.

Now, If jobs can sub whm or RDM for cure IV why is our job as a main stuck on that same spell? I was expecting more of a level 99 game after I quit not a fake 99 game based on level 75 rules still.

This also goes in why not give weather II and helix II? You know spells for the job as a MAIN that can't be obtained as a sub. (You let sub all our helix spells so where is helix II? why were these spells changed to be subable anyway?)

Then I do not get why a 99 SCH requires addendum: black to cast stone IV-thunder IV when rdm can freecast them (back when it was 75 SCH freecast stone III- thunder III same as rdm)

Stone IV - thunder IV under Addendum: black at 75 is fine, at 99 it is stupid.

Please break all the level 75 rule mentally, thank you.