Tribes 2 was my first taste of modding, the game holds a super special place in my heart too. Then came Ultima Online emulators Sphere and RunUO that turned me from a gamer into a programmer too.
I assume this[1] is your website, please do not ever let the website go offline. It is such a perfect reminder of the time it is from.
Like you I was just tinkering, though I stuck with it for a long time. At that point I was 19 and literally living in my mom's basement.
It's all server side so there wasn't a huge amount you could do. The flame thrower was just the grenade launcher rotated upside down. The shotgun was my best invention, IIRC made up of two ELF guns rotated 90. Deadly up close with a delay before firing, only useful from afar to take off a sliver. Cloaking and hitting someone in the back with it was great -- click-click BANG dead. Good times!