I'm not totally sure I see the difference between using app-browser to get extensions and using package mangement (apt-get, yum) in a full distro?
just the sheer breadth of the repository:
sudo apt-get install mped works, sudo /usr/bin/tce-fetch.sh mped tce doesn't. when you make a request for something already available in apt as a tce, you are at the mercy of your own compile environment and the generosity of wonderful contributors like yourself. i am not naive about the practicality of adding apt to tc. i'm sure it's entirely impractical. a nice thought, but an idle one. i'd love for you to disagree.
there is however a lot of learning/satisfaction to be gained in compiling your own extension and making it available to others
no, i disagree. i think compiling is one of the least straightforward, most unpleasant linux tasks there is, next to installing a printer or configuring wireless. i always avoided it, up until tc gained so much trust i tried with a few simple program sources. not only did it not work, i have no idea why and there seems to be no idiot's guide anywhere.
you're entitled to your opinion and it's a good thing for all of us it's different, but it's not for the average user that thinks tc is generally friendly enough.
i did compile one package in tc today: zile, based on roberts's book. first compile ever (yay!) then i tried mp from triptico.com. it said it couldn't find ncursesw, oh well. but it's not fun at all. using tc is. apt-get spoils you. everything is already ready already. if compiling was just tedious, that's one thing. it's actually somewhat painful.