Full description:
Give traitors a bigger economy buff, the longer the game takes. Aswell as an increase for each normal that dies.
Intended results:
Noone will have an initial advantage and so it is difficult to determine the traitors based on eco in the beginning.
The longer the traitors can manipulate the game and stay hidden the bigger their advantage will get.
The more normals they can kill themselves or cause the death of one, the better they're playing and thus the bigger the eco advantage should be.
More difficult for traitors to just rush an attack, since their early traitor advantage is small. More difficult to simply skip the new mechanics and rush into battle.
Synergy with other suggestions:
This works well with players having the tools to gain and manipulate knowledge. Fast knowledge gain is good play by normals. Manipulated and obscured knowledge is good play by traitors.

Full description:
Let traitors know who the other traitors are so they can work together in manipulating information and killing off normals.
Preferably one would remove the possibility of personal messages, so they have to work together through feeling each others plans.
(Maybe traitors form a team aswell, to prevent eyeballing each other at the end of the game?)
Intended results:
More players working together can result in more interesting manipulation play?
Synergy with other suggestions:
None for the moment.

Full description:
The patriot has a consumable ability which he can use once each game. When the ability is activated he chooses a player and the game will tell everyone that the ability has been activated and if it was a succes or not. Simultaneously the traitors get the name of the patriot. Only the patriot knows who the target is.
Intended results:
When the ability is used the patriot will know if someone is to be trusted or not. And when he himself is trusted, can use this knowledge to reveal a traitor.
This opens up a lot of manipulation possibilities for the traitors, i.e. claim that they are the patriot and who is to be trusted or not. In general put doubt in the mind of the players.
Synergy with other suggestions:
None.

Full description:
Every X amount of time all players can vote on who they think is a traitor. If the threshold of votes is reached the game tells if he is an actual traitor or not.

Some variations are possible:

• Only who didn't vote with the majority vote, sees if he is a traitor or not.
• Everyone sees the result
• Everyone knows someone is a traitor or normal, but don't know who actually was majority.
• Only patriot and traitors know the full result
• Random person knows the full result
• ...

Intended results:
Give Normals a way to discover who is a traitor and who isn't without having to wait for aggression or other tells.
Give Traitors a way to manipulate the results of such a vote, or even the entire voting process. So they have opportunity to be disruptive.
Synergy with other suggestions:
Doesn't really work well if traitors know eachother from the start. This could be a good way for a traitor to find the other traitors.
Team of traitors can easily boycot each vote from the beginning, making it meaningless.

Full description:
This idea is derived from secrethitler and thus it maybe useful to read how that works to better understand my intention.

Every X time someone will be assigned as Prosecutor. This can be done randomly or in order. The Prosecutor chooses a player that he think he can trust, he will be the Defender. Next the Prosecutor picks 1-2 players as possible traitors. Nobody knows who he picked, except the Defender. He has to pick 1 of them to be "Prosecuted" and as such "Defends" the other player. Then the game signals if a traitor was found or not. And the discussion can begin.
Intended results:
Using this method people can find who is a traitor and who isn't by deducing the received information and peoples behaviour.
Conflicts can arise when a Normal is Prosecutor and a Traitor is Defender or visa versa. Lies about who was prosecuted and who defended.
Two traitors can falsely accuse whoever they want.
Two Normals can find the answers to their questions.
Synergy with other suggestions:
Traitors should probably know eachother for easy manipulation, but isn't required (option in lobby?).
Doesn't work with the other suggestions for information as it already can be a good source of information.