so, calling the 'election' for Tuvok
of course there is no right or wrong (who would I be to say who is correct or not? and we are talking about sci fi)
I picked 7, why?
- her "education" and nearly unlimited pool of knowledge, available at the speed of thought
- her having been assimilated at a young age and therefore, never having been overly 'contaminated' by human social interactions and mores is a plus. she was basically what we would call, home-schooled by her parents, so what she did learn on the social front would have only been what they had taught her,and they were scientists. This asset would make her able to make decisions in a more objective manner, imo
-her being a former borg, her cybernetic functions would allow her to link in to the ships tech without the need for inefficient verbal communications
-she is the only member of the crew who approached all issues from a objective perspective. Every other member did use some level of objectivity, but it was always diluted by subjective variables. Even Tuvok could not operate at this level of objectivity even if he never showed emotions. Being a Vulcan, he had to always dampen those feelings via applied discipline and meditation,etc.
- and, what in my view is the most important FOR THE MISSION VOYAGER is on and where they are at- she has ALL of the information of the collective at her command. In particular, all the training and experiences of every member of Starfleet ever assimilated. Plus all the training and experiences of every other person or alien species ever assimilated. Giving her an unparalleled ability to access and put into action,immediately, that info for the benefit of the ship and crew.
as for her trust worthiness factor, she showed -in the S4 finale, that she actually had no desire to return to the collective. Due to the actions of Arturis, her and Janeway were minutes away from assimilation, and 7 stated she had no desire to return to the Borg- "VOYAGER is my collective"
this,and the numerous other times she worked on behalf of the crew-often times using her body as a weapon or tactic, further demonstrated her loyalty.