I understand people wanting to play different kinds of creature races, but that should largely be guided by setting. If we're going with the 5E MM gnolls, then they could never even approach reasonable action and the answer at my table would be no.
Its NOTHING like a non evil Rakshasha. A Rakshasha existence is tied to it being evil, a Rakshasha who stops being evil wouldn't be a Rakshasha anymore, it would become something else. I had that very discussion with Keith Baker himself. In his mind unless a creature has to be a certain alignment as part of its very existence (such as demons, devils, solars and such), then that creature doesn't always have to follow its MM alignment. A gnoll is only evil because it is brought up that way. It doesn't HAVE to be evil to exist. You DO realize back in 2cd ed they said Drow were not acceptable as a PC race right? And guess what? Now there they are, right there in the PHB. Non-evil Gnoll totally do exist. They are simply rare and probably have a hard existence. There also ARE Gnolls who are sort of like assimar versions of Gnolls out there. I've already been working own my own tribe of non evil Gnolls who are nomadic just as has been mentioned in some of the other edition guides. They live by rivers and such and fish, hunt and trade with humans. They are still agressive but only violent to those that threaten them. They attack and are attacked by the more traditional CE Gnoll tribes because that totally makes sense. The followers of Yeenoghu would definitely kill other gnolls they felt were "traitors" on sight.
Unfortunately it's true now. 5e (and before that 4e but not to such a large degree) has ret-conned the origin of the gnoll race. Before they were just another type of humanoid and Yeenoghu was an interloper who one day discovered them, took a liking to them and managed to supplant their former deities.That's NOT true at all.
That's NOT true at all. There are Gnolls with Assimar blood in them out there AND in 4th ed they talked about playing non evil Gnolls. They don't have to be evil to exist. I mean haven't you heard of Tieflings? They simply have demonic blood in them but it doesn't mean they can never ever be neutral or even good.
Agree to disagree? Cause I'm not agreeing they can't be good in the Forgotten Realms, where all kinds of whacky crap happens anyway and where ONE good Drow has given birth to a Good drow godess and her followers...Cause I don't remember jack about Ellistrayee before Drizzt came around...So I say nay to you. MEATBALL THE GNOLL SHALL LEAD THE WAY TO GOOD, ERR NEUTRAL GNOLLS WHO LIKE TO EAT LOTS OF STUFF!![]()

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.