First off i'm not saying the game mode is bad, but after the 5th time in a row it can be boring with the excitement of the round purely dependent on whether or not the traitors want to do something different to spice it up after stealing the same medal every time they get traitor instead of getting placed in to a different antag role like vox,nuke ops, or wizard.
Now about the lings, it is the same sort of thing with the traitor you end up stealing the dna with the sting and not a lot different, this would go on for all of the rounds this is not inherently a bad thing i'm just saying that it would be better if there where more round types in in between all of this