Well as a noob Fyros I can tell you that there is alot more traffic on the noob island than there was when i first joined (about 14 or 15 days now). It went from 2 or 3 on at a time to almost 20 on at a time these past few days.
I got to say about 6 of them are with me. We are playing together and "hope" to lvl around the same pace and work together to get things done. So for us we should never have problems finding groups. But I gotta say... not sure how it is in the other lands. The way it is for fyros anyway, if most of these noobs are staying.. we will all be able to interact with each other in terms of grouping, buying/selling at each others lvl, ofcourse some will lvl faster than other and some will lvl slower, but I mean in general, if people are staying on after their trials, the population for fyros (Burning Desert) might not be as bad as it seems for you.
Hmm also... isn't there a way of knowning how many people are in the areas your not in? That would be very helpful I guess.
Hmm also isn't this one of the main ideas for guilds

to play with people you can group with and contact easly
Just my thoughts
Raven