-Smoke Grenades-
Negatives- As of right now players just randomly throw smoke granades without any intention to use them in anyway to help them at all, this leaves parts of the map covered in a gray fog making it hard to see. Increasing the area that the smoke is in will only increase the annoying nature of the smoke covering the map even more.
Positives- Smoke as of right now is not large enough for a player such as the traitor to even benefit from. Increasing the size will bring many benefits such as allowing T's to enter T room without other players seeing them, It can allow Traitors to make a quick escape without players finding out where they went.
Overall- I am unsure if it really is needed as both negatives and positives equal each other out.
-Weapon Attachments-
Negatives- It might over complicated weapon design, Right now in TTT people recognise the basic guns in the game and have gotten used to them. If attachments are added players may be unsure if the gun a player is using is a traitor weapon or not this is mostly talking about new players who dont fully understand TTT. Another problem is that people may be unsure what gun provides better stats over another gun. Another massive problem is it will make weapons that currently are very powerful even more powerful such as guns like tec 9, Adding fast mags and silencer removes both of the guns biggest negatives and makes the weapon even more powerful that being how loud the gun is and how slow its reload is.
Positives- Allowing more attachments to be added will make every round more unique as many players will have different guns with many different attachments this will overall make the game seem fresh and new. Negatives of guns will no longer be a problem as attachments will help improve the negatives that a gun may have.
Overall- Adding attachments will make the game more interesting although it may make guns that are already overpowered even more powerful making it unfair for lower level players.