I'm hoping more Path to Glory stuff will get published, many of the armies are missing. A few people have been asking on the AoS Facebook page, and the White Dwarf Facebook page.
I'd possibly argue that having a griffon or wizard wagon would only get you 4 follower rolls rather than 5. Each of those options is a really strong unit to start with, the Hurricanum especially.
The Free Peoples and Devoted of Sigmar look ok. I hope perhaps in the future they get a new troop type unit other than flagellants. But otherwise I wouldn't change anything.
But for a Path to Glory for Collegiate Arcane and Ironweld Arsenal, those are tricky.
For me, with Ironweld Arsenal, The Gunmaster or Cogsmith should be an option for the Champion, and both again on the hero follower, possibly then limit
a war machine for each hero the 'warband' has gained. But they should have all the options for the Ironweld Arsenal, including the Dwarf cannons and organ guns, and the copters.
Collegiate Arcane, can have either griffon mage, wizard wagon or battlemage as champion option,
And can only have up to one each of the griffon mage, Luminark and Hurricanum in the warband, and must have a battlemage follower for each one.
The Collegiate Arcane and Ironweld Arsenal could very easily gain enough units to meet the Battallion requirements though.