Now, yes, this is my first day. Even so, I have a few thoughts --
First, I can't post on the feedback forum (or General, or a couple others). I'm not sure if this is account duration controlled (eg, no posts before a week or some such), but I suspect it's account level controlled (eg, I can't post on it because I haven't subscribed). This seems counter-productive. You want trial players who aren't going on to subscribe to post complaints to the feedback forum so you know why they aren't buying your service. Even if they're rude and offensive (which is no loss to your community as a whole if they leave), repeat complaints are a kind of flag or signpost. Now, I'm happy that Ryzom doesn't seem to be as subscriber-enslaved as some of the bigger MMOs, but I rather suspect the developers, whose paychecks depend on player base, are less so.
Second, the dialogue interface is awful. I started a conversation with the first guide NPC and kept walking away midway through, unaware he had more to say. Having to hit "Ok" and <i>close</i> the dialogue box to continue the same conversation really interrupts the experience. You might also consider having a "subtitle" option for dialogue, in which it displays in a fixed box somewhere on the screen... having to muck around with camera angles to read what someone's saying is distracting. If this already exists and I simply haven't found it, my apologies.
That's it so far; I'll likely provide more feedback as I continue to play. The game seems to hit two of my pet peeves about MMOs (excuse my harshness! I really do like the game -- I wouldn't be bothering to post here if I didn't); repetitive actions and no 3d movement (jumping, climbing, so on and so forth). I'm not suggesting these be changed... the former is pretty much a trope of the genre, while the latter is a relatively minor point for most players, and so fixing them would be a lot of effort for relatively minor benefit. Still, if I personally don't subscribe to the game, that's probably why.
Anyway, again, I'm enjoying this so far, and hope to be around for a while.

-Arafelis