I will reply fast from the phone
1.The game can have 4 colors on the chat, that's what our scripter said a few months ago. Green, red, blue, gray or white.
2.About the XP and levels, e did that on the last server we had, we had different guns which you could buy if you have a certain level but there was a problem. Players kept using other players name because they had higher lvl and acces to more guns. This also happens with people which have a lot of points. Others can't help it and use their names and consume everything. It happens and it will happen as long as people with more than 500 600 points won't have slot with password.
The last time we had this XP and levels things and we noticed people complaining others used their points and etc we introduced a way for everyone to get slot on the server from the shop. We started sending messages in chat so people see that option and so they started using it. After a while people started to forget their own passwords and that hurt our server because we had fewer and fewer players.
3 and 5.Zombies have some abilities, will be added some more zombie classes in the future as some other sounds I don't know now but we will think about..maybe you can be more specific here.
Skins on weapons may be hard to achieve, as sometimes the players skins makes the server run not that great..low fps lagging etc.
With a lot of skins on weapons I think the server response will be the same. Only if we make the skins to be visible from the normal view but not from the 3rd view perspective. Meaning others can't see the skin so they won't be affected..only you but it's tricky
You can elaborate here more if you want
4. Maps which are currently in server vote rotation are meant to be played maps, popular ones in order to get the server with more and more players even if admins are not online. When admins are online, I've told them to vote other maps too.
We are a new server and we don't have a solid player base..look at statistics the server isn't great. It takes time so the players we have are through the boost service we buy every month. These players won't appreciate map changes and leave immediately and I'm sure you have noticed a rapidly decrease of players almost every map change..
I don't want you to feel discouraged because of this answer. I appreciate this proposal, it's well written and reasoned.. and tried to answer as best as I could.