Please make planting the bomb (INGAME) take 3 seconds.

Projectiles launched in wall or closed by wall should stop and keep no flying and not bouncing anymore. It causes this ugly sound like ratchet

Mods should support maps too, but why is it not supported by default yet?

Map editor should let you search for existing entities too.

When it will be finally possible to use longer messages in chats? It's 2021

@ Marcell: Chat is not supposed to be a essay

It would be so amazing if there was a hook for when a player opens and closes their chat.

chattoggle(p, state)

It'll allow for many cool chat modifications such as skins or even the ability to disable the chat key completely if a return value will also be accepted.

Furthermore there are many cases where knowing if someone's chat is open could benefit in custom game modes.

Such as, but not limited to:
Allowing players to know that someone is typing a message and isn't AFK.

Noone is talking about essay, but at least have the ability to write a longer sentence, which in this case is impossible.

Yes, being able to write longer messages will be great.

team should have an additional parameter signalling why the team change has occurred.

How about allowing the radar to not rotate around the player and make it easier to show the whole map

I really wish that when we used on Windows, that the command prompt won't flash on the screen.

It's really annoying! Please change this if you can.

Option to clamp the cursor to the CS2D window. It can get annoying using a multi-monitor setup.

Maybe an env_door that can either be animated or works similarly as a func_dynwall, at least I wish there was a way to set an open and close sound effect that you can define.

May you add something like sv_contact? It will be useful to display admin's email in the "You are banned" message.

Please allow for hudtxtalphafade, hudtxtcolorfade and hudtxtmove to be used without delay.

Similarly to how images have regular functions and tween functions, when the time given is 0, it should happen within the same frame, rather than the next frame.

For backwards compatibility, you can also allow for -1 for no delay, but honestly this could arguably be considered a bug.

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tick hook
Called every frame.
Additionally, mark the always hook as deprecated.

player_mouse hook
Will be called every time a player moves their mouse, some limitations may be applied (such as only calling this every 5/10 frames with the updated values (if anything changed)).
Will be useful for GUI based scripts (avoid calling the player function on an always hook to get the mouse positions).
There could be two versions for this hook, one for on map position and the other for on screen position.
Or, give all values within the same hook.

Make Copy & Paste commands work like they supposed to do. As for now, when I do Ctrl+V, it removes the whole text content and then pastes what it should. This is too annoying, I never saw this in any other software. And copying something (e.g. server IP from the servers list) sometimes just cleans the clipboard, I did not find any regularity in this so most likely it happens randomly.

Fairly certain that copying server data (such as IP or IP+name) will only work every odd time.
The first time would work, the second wouldn't, the third will, ...

Make lefthanded option work for "claw" too, sometimes(in my case) it play good role.

sync damage and RoF values from the buymenu with the values that the server uses.

Allow server/client mods that replace weapon names.

@ Marcell: Add custom weapons (with melee) too