Could we at lease discuss ways to improve my proposal? or could it be put in the bug tracker/feature list so that if anyone gets interested in implementing a feature such as this they could come back to this and improve it?

I don't understand what would be the goal of that. The issue is not the implementation or how well designed it is.
This may take some tweaking but I'm pretty sure this can be done without too much work.

That is why I made this proposal.  If custom weapons existed I would not have to make this post.  TeeWorlds would have to change a bit to except these new custom weapons.

I have seen over any over again people asking for various weapons to be added. They think that their gun should be added because they think it would add value to the game.  I don't know if it will or not I don't have any specific examples. But say that someone comes along with an idea that truly would add value to the game.  Instead of you having to go into the code and make modifications every time a someone with an idea for a new weapon that would add value comes along.  Would it not be better to write a system like this one now once, than to have to mess with the code multiple times?

I understand you're trying to please everyone - and I agree that this (sort of) system would be a good change if we were to add custom weapons - but the thing, we're not willing to.

I have seen over any over again people asking for various weapons to be added. They think that their gun should be added because they think it would add value to the game.  I don't know if it will or not I don't have any specific examples. But say that someone comes along with an idea that truly would add value to the game.  Instead of you having to go into the code and make modifications every time a someone with an idea for a new weapon that would add value comes along.  Would it not be better to write a system like this one now once, than to have to mess with the code multiple times?

Im sorry I don't see how that has anything to do with this. would not it be up to the map makers to put various weapons in the maps?

It doesn't matter, they cannot use any custom weapons. So there can only be hammer/pistol/shotgun/grenade/rifle/ninja.
So using this kind of system has no advantage really.

please let me know what would be wrong with this proposal.  I knew that there would be issues but that is why we have these forums to iron these out.

This proposal is not about adding any new weapons to vanilla. I don't have any good ideas for a weapon that would add value to TeeWorlds.  and thats ok someone else will have an idea for a weapon that will change the game forever. This proposal is about making it easier for the devs and people who run servers to add new own guns.

once TeeWorlds understands how to read the weapon.xml files not much work will be needed to be done if anyone wants to add a new weapon that will enhance the value of the game. Who knows a machine gun with a faster fire rate could change the game play and add value.

Your proposal has some heavy issues but I'm not going to dive into them now.

Adding a separate weapon sheet is cool idea but right now there's no need for it since there's no plans to add more weapons (as far as I know). Adding more weapons to vanilla should add something to gameplay, not just different damage, fire rate and skin but something unique.

-

I just recently added a separate weapon sheet to my client so you can play with "random" weapon skins. And if you play Killing Floor, each of the 17 weapons (except for Mjölnir, I still need a skin for it) has unique weapon skin.

My current weapon sheet: