Nop besides trading ruin the longeivity or i can say the life span of the game.Enables trading could be a very vital mistakes to all of users in warframe.It encourages hackers.If trading is possible and be much easier,hackers will target high lvl accounts or 'wealthy' account,steal their rare modes and may steal their platinium by issuing a false trade with the hacker alternative accounts.Besides these, trading could lead to scamming and other illegals doing.The adminstrator of warframe or the gm won't do much about it because they can't be 24/7 to pay attention to our reports and our complaints.
The dropping of modes,materials, and blueprint for all of the user is equal during the game.Meaning that nobody is going to rush and steal the modes,material and blueprint because all of them is equivalent and there is a justice of distribution.For that, trading is not necessary.
Other than that,trading may lead to those new players who is rich in terms of plantinium can own everthing in the game by just using plantinium.Thus,this leads to discouragement of current and long time playing users from playing warframes as money owns everything in it.They wont have to spend their time to hunt rare modes or enjoying playing the games.They will just pump in money and own the game.This will lead to unsastifacotry to a lot of players that supported the game by far.