Long Haul - better than 371 which had you un acclimatised as soon as you ended up somewhere over three TZ away. More difficult to calculate though.
FDP pretty similar to 371 except for early starts where longer FDP available
Discretion is less than 371 I get your point xollob but why divert to an airfield you have never been to, with marginal weather when destination is 15 mins away and wide open just to keel legal. The rules do say when airborne.
The only area where pilots do lose out is when they sell days off. Under 371 this often resulted in a stash of cash plus more days off to meet 1 in 7, 2 in 14. Now with ERRP this doesn't always mean they get days off as well so can end up working a stint.
But as we know fatigue goes out the window when £££ involved