F50 im not trying to be a dick im just trying to make trem better, what am i doing to be a troll? 
I'm personally pretty sure you aren't trying to be a dick or a troll, but you just are fairly uneducated about game development. It's not a bad thing on its own. In fact, it's a good thing if you are honestly interested in trying to improve a game, and Tremulous is a great game to try to improve (because it is open source).
Now, if all you want to do is just throw out ideas off the top of your head without thinking about them, you are probably better off finding someone or some group of people (real life, or in game, on irc, or such) that you can toss ideas around for fun. That's fine. The forums probably aren't the best place for this. (You have already noticed it won't be extremely appreciated.) This is because of two things: 1. if you didn't put thought into it, why should anybody put in the effort to put thought into considering your ideas? and 2. if you didn't put thought into it, its more likely than not a pretty bad idea.
But if you really want to present some ideas to help the community and game, try these steps: First, consider the idea that more is not necessarily better. In fact, while adding variety to somethings (more weapons or classes for example) may, in a vacuum be more interesting, over complicating a game is usually a bad thing, and a straightforward and easy to use and understand system is probably preferable. Too much cluttering and jamming-in of ideas will probably make a game worse. So if you do want to introduce a new item/class/weapon/etc, consider it having two possible positive outcomes: 1. It (probably replaces) and improves upon an existing thing, or, 2. introduces something completely new to the game, which benefits Tremulous from its new aspect. If you have what you think is a great idea, think to yourself, "does this significantly improve the game, i.e. make it more fun, more balanced, easier to understand, and is it unique?" AKA, think to yourself "what is the point of adding this?" critically and seriously, and if you can really answer it, propose it.
Some examples:
New alien: Crawler, a walking om that gives creep in one area, advanced crawlers have an acid defense system
Ok, this one I would just say "WTF?" too, because what is the
point? -boster and medis heal 3x faster
Here is another one to add "WHY?" too, but on top of that, think of how unfair and/or unfun this would be. If a tyrant could heal back to full health in two or so seconds after being almost dead just by being near a booster, think of how hard he would be to kill.
New gun:Hivemind eradicater, this weapon creates a gas that makes any near by aliens die instantly defenses will destroy each other
I hadn't spotted this one before, and make me more seriously consider the fact that you are trolling. This is because even if you were the highest you have ever been, I don't see how this would make sense to you. Besides the fact that obviously this is nowhere NEAR fair, think about the fun aspect. This is not a single player game. How would you like saving up for a tyrant and than being instantly killed by some dude with a fancy weapon?
If you can think of good ideas which add tangible benefits, keep or improve (hopefully improve) the level of "fun," add something
new and keep or improve the balance, than post that idea, with your explanation of all those positives, along with possible negatives and a general description.
Here's a better idea though. Instead of brainstorming wild ideas and hoping something fits, try thinking about what problems you see in the game, and than coming up with solutions that address and fix those problems. If you want to make a new post, detail your analysis of the flaw(s) you see, and how your change helps to fix that flaw, along with the other things I mentioned in the section right above. This, plus correct spelling, grammar, and a readable and cohesive layout and arrangement of ideas will get you moving on the road to being respected and maybe helping improve Tremulous!
If you do want to improve Tremulous, I hope you find some of this useful, and will use it to contribute in the future.
If you are a troll, fuck off (no insults if you aren't though) and hopefully someone legitimate will find this post helpful.
Honestly though, what I think will happen is this: You are probably some kid who likes tremulous, likes Call of Duty, wants to combine the best of his favorite things to make an uber-game, and didn't realize the actual outcomes of this. You will be put off and a bit intimidated by the sheer amount of work it takes just to create a
proposal for a new idea, let alone getting it created, implemented, and accepted, and will disappear from the feedback and idea palace sections. Or related to this, maybe just keep posting crazy ideas.
Anyways, that was kind of a long ramble, I hope you aren't discouraged, and hopefully you and others come to appreciate and learn a little bit about a little bit of theories of gameplay-modding.
