Names in Montaigne. The french translation changed a lot of the names in Montaigne, because the original names were just not an option. To be honest I don't even know many of the original names in the original version (the capital on Montaigne is Charousse as far as I am concerned). I hope you can consider to rename the worst Montaigne names in the English version (possibly to fit the French translation), especially if we don't know if there will be a French version. I think otherwise Montaigne was ok from a French perspective, just the names. (Well personally I hope the revolution has not happened in the second edition, but that may just be me)
Fear not, we have a native Frenchman helping us with Montaigne. We're also reaching out to other native speakers to help with other Nations. That said... Remember that Montaigne is not France. Similar, inspired by, but different. ;)
Sorcery and Syrneth. Without going into too much details, I have understood that the Syrneth side of things is not really John Wicks preferred part of the original 7th Sea. I get this, I know this opinion is shared by many, especially the *practical* details of the Syrneth, but the dark link to sorcery is a great aspect of 7th Sea in my view (and I know other GMs agree) even if it is something that should only be explored *later* in a campaign. If the second edition is planned to get rid of this aspect, could it be possible to have it in an extra optional sourcebook for those who want it?
That has been a big topic of recent discussion in our design meetings. I can't say anything specific... What I will say for sure is this: Every single aspect of the game is being pass through the questions, "Is this something a Hero would do? Is this Heroic? Is this fun?" Some aspects of Sorcery fail those questions and we need to address them.
Concerning what used to be called knacks. I am happy to wait and see what you have done, but I just want to point out that one viable possibility would even have been to remove them entirely and just have a level in (what used to be called) skills.
The entire Skill\Knack system is way different. The term Knack doesn't appear in the game at all and... well, in a few days you'll get to see for yourself. :D