I just had a quick look through the first page of the rules forum and came up with the following. Most of the questions we have reached a community consensus about that the "official" answer most likely is, which I have listed too, but the questions all have in common that they don't have an officially forum posted answer from RRG yet, which I personally would like to have, so we can make an official FAQ and not one based on word of mouth.
Tactics while mounted: Does a mounted gladiator+beast duo still count as a gladiator for the purposes of movement (Maneuver) or fatigue (Rouse) abilities that only gladiators can use?
viewtopic.php?f=4&t=38416Community consensus so far: Yes, they probably do. But some people seem to want to house rule that pairs cannot Maneuver together, because it seems too strong.
Targeting and range: Can you legally declare an attack against a model that is not within your engagement range, and trigger e.g. Pounce from doing so?
viewtopic.php?f=4&t=35152Community consensus so far: Yes, you probably can.
Exactly vs. Within: Is a model pushed exactly 1" away from an attacker still in engagement range?
viewtopic.php?f=4&t=38483Community consensus so far: No idea yet, but my guess is yes.
"Net" success: Does an Ambush attack success trigger the extra successes and pushes that you would gain during a normal attack?
viewtopic.php?f=4&t=38329Community consensus so far: Yes, it probably does.
To be Noxius: Is Noxius supposed to count as member of a ludus during the game? The rules say one thing, but we have an email from RRG saying the opposite.
viewtopic.php?f=4&t=35739Community consensus so far: The rules are probably right, so no.
Ending the tree: Does Hermes have a shortcut to Flourish or not? We have an email from RRG suggesting that he doesn't, but would be nice to have it in public too.
viewtopic.php?f=4&t=35739Community consensus so far: Seems like neither the fans nor RRG like the shortcut idea, I'm the only one that does, so probably not.
And also, How does Dextarius displace? - but We know that a correction to this is on its way. I hope it will be posted as errata in the forum somehow. Since there is a specific rules forum for errata.
Edit: However, we also have Walker promising an errata for Berserk in September 2016, which I haven't seen anywhere yet (
viewtopic.php?f=19&t=34611). Maybe we could be waiting for a while. Facebook?