Here's an idea that I wanted to share with you guys for a long time, that I think is pretty cool, but due to my newness (back than) you would have totally flamed me for.
Blocko Pets
Yes, it sounds kinda dumb, but here's an interesting idea; Why don't you have little "pets", which are basically bots, that you can train, raise, and breed? I thought it'd bring an interesting new dimension of gameplay to Blockland; Whenever you're not killing each other with bombs or building something, you're raising your pet to do battle with other pets, or fight in deathmatches along side you, and are controlled and spawned on other servers via the Pet GUI, which is basically the control panel for 'em. Obviously, the pets would only be spawnable on servers that have the pet mod installed.
So I thought of a pet system a while ago, and here's how it works; Fighting in deathmatches, building blocks, or doing something along those lines in front of a pet that's currently in play (In the world somewhere) and it "learns" how to do that better; For instance, if you shoot at someone during a DM, and your kill him or her, the active pet learns how to aim and deathmatch better. At the top levels, it'll aim like a player with an aimbot and be able to move the instant it fires, but at the lower levels (Just created) it'll shoot wildly, and react slowly in a deathmatch, if fired at. And when you build, every brick placed adds a bit to their "Intelligence" level, which slowly unlocks more Pet Command in the pet GUI, which will obviously be needed.
Also, it should be noted that pets can appear in other games, but if it's not your server, only one pet can be in game at any time, and when you leave the server, they go with you.
Feel free to pitch around comments and ideas. I was in a rush when I typed this and may have screwed up some crap.