[Michael Chandra]

'We are just presenting some options here to help as general consensus ... gm has final say in their campaign'

[kyoto kid]

In 5E this was easy to manage as she just spent downtime and Karma to pick up and/or improve a knowledge skill. However with the more "arbitrary" way knowledge skills are handled in 6E not sure how this will work. I find it odd just saying that between missions she has this new skill or picked up a new language.

You do know that saying you spent your downtime in 5E to spend karma to pick up a new skill is the same as saying the same thing in 6E?

...however, given that knowledge skills are now chosen arbitrarily, do you really need to spend Karma on them as during chargen you simply what your character knows?

[kyoto kid]

In 6WE there are no established training times. The rule is training takes whatever period of time the GM wants it to take.  The charts given in the CRB are literally only a suggestion.  I'll grant that I also think they're a terrible suggestion, but the fact remains they're only a suggestion.  Training time can instead be measured in days or even hours, if the GM sees fit.

...I'm sure Missions will set some sort of base time frame to keep things form getting out of hand since time is so "fluid" between sessions.

In 5E the base time was pretty well set down. 1 day x new rating up to rating 4, 1 week x rating for rating 5 - 8, and two weeks x new rating for nine or above.   Skill groups took two weeks x new rating and specializations one month. pretty straightforward, no GM input or decision needed.