Subject: Aircraft content and the way forwardAs has been explained to you previously, there are several things involved here - but in general, you are unlikely to become a core committer without also having a track record of doing related work. Even more so, your chances of becoming a core committer are much better by being a regular user of the devel list - forum users, rarely, if ever, tend to end up with commit privileges. Regarding the other comments, it is true that you need to be somewhat "accomplished" to be granted with commit privileges, so having a certain reputation certainly helps.
Then again, there's a rather sizable list of FG contributors who made significant (and even unprecedented) contributions, such as the sport's model branch (John Denker) or the osgEarth integration (poweroftwo) who still didn't end up with commit privileges.
Whereas much less accomplished contributors (without any remotely similar track record), did end up becoming core committers.
So becoming a core committer is judged on an individual basis and unfortunately not at all a formalized process - for the project, it would actually be good to conduct regular nominations/polls based on people's involvement (patches etc) to maintain some fresh blood - so far, there are only two project maintainers who are bold enough to provide commit access to newcomers (namely, James Turner (Zakalawe) and TorstenD (Torsten on the forum).
Either way, without having a track record of understanding C, C++ and preferably OSG and some parts of the SG/FG eco-system you are very unlikely to end up with commit access to the main repositories (and rightly so).
For the record, some of the more senior contributors literally spent years contributing through patches before they obtained CVS/git access, as per the devel list comments by Curt, Stuart and others, quoted at:
viewtopic.php?f=42&t=26115&start=90#p241400 and
viewtopic.php?f=42&t=26115&p=240987