I get the feeling that I'm missing something, but the Meditation talent removes 1 level of fatigue with 10 minutes 'without interruptions', but fatigue already goes away after 10 minutes of rest or 'other non-strenuous' activities.

Sooooooo what does Meditation do, now?

In the other games, which are obviously not inherently Marine-centric, fatigue is removed at a much slower rate (1/hour, not 1/ten minutes, if I remember correctly). Meditation exists to allow non-Marines to remove fatigue faster. It serves no purpose on a Space Marine, as far as I can tell.

So, then, the great mystery is that the Mortifactors Successor Chapter is given Meditation as a starting talent in RoB...

Captain Ventris said:

Maybe it is meant to double their fatigue recovery rate to 2/10 minutes? That way a marine that is heavily fatigued can recover from near exahustion in a matter of minutes as they concentrate and allow their bodies to do what is needed.

Or it could easily be modified to allow a marine to increse his fatigue recovery rate to 1/minute, or 1 per DoS/10 minutes

Well of course it could be modified, but...somebody put that junk, not as part of a pre-existing table that someone forgot to excise, but as a new bit for the Mortifactors, and I'm just wondering what the real intent was. Possibly it was to double up on fatigue recovery, that could be a decent solution, perhaps.

I do not know much about the Mortifactors (Haven't read RoB in a litle while, so, might be a bit fuzzy).

Are they a particularly esoteric and internal group of Battle-Brothers? Do they do a lot of introspection, mental centering, or a rather acetic lifestyle compared to other Chapters?

It could be that this is just fluff being supported by rules.

Buliwyf Hagnarsson said:

This.

http://warhammer40k.wikia.com/wiki/Mortifactors

They're a rather morbid chapter IMO. Very tribal like