One person should not give someone positive or negative feedback from more than one account, as it leads to 2 positive or -2 negative on the user's profile.
Or think it differently. Imagine I have two accounts which I log in frequently. If I send negative feedback on Account A from Little Mouse account, I will not see that tag from my alt account and vice versa. Again, including alt in trust list is forbidden. In that case, would not tagging from both account be perfect?
PS- Not an attack to Timelord2067.