Just a quick wish list of stuff i would like to have added in a future update/s.

weapon: grenade launcher; uses both your grenades so it can be fired once every life and has limited range

weapon: sniper rifle; simple enough lots of damage a scope but a slow fire rate

weapon: shotgun; shoots 5-6 pellets per shell and must be reloaded every shot

two new bombs:
C4; place able and can be blown up by right clicking
mine; place it like a block change the color like a block so you can make it cammo :D
you would have to choose one

reduced smg recoil :/

modes:
CTF; the current and only mode
timed; each round takes 5 minutes and the team with the most points win
To Death; fight untill you die last team with people left win a point
FreeForAll; for the build only servers mainly. points disabled and there is no way to win although you can still kill

kill streak rewards:
3=temporary unlimited ammo and slightly increased health
6=airstrike drops bombs on a part of the map
8=nuke upgraded airstrike kills everything in the blast and fills an entire square
12=some sort of heavily armed veicle i don't really care to much i can be a car or plain or helicopter or whatever else
using these restart your killstreak

Better anti greif system

more commands!

Admins; especially for the more serious servers its hard to moderate by yourself

sorry if this seems like a lot but..it is

AOS engine could support sprites (in GIF and APNG formats) like in Skulltag Doom/Zdoom engine. It would allow to add cool stuff to maps, like plants, small rocks, spiders, fire, balloons, lamps and whatnot. Graphics files maybe should be limited in size/ammount of colors/something so they don't eat up all the traffic and map files don't become fucking huge.

For the good of client side modding - I'm thinking that the game could have an option to use animated sprites for weapons/tools. At least this is somehow possible with weapon scopes now, but ability to replace weapon model with multiple sprites for player's 'local' viewpoint and APNG (animated PNG) & GIF support for them would be nice.