Honestly? I think anyone who voted for Ultra Magnus wasted their vote. There is a short list of characters who will 'always' have a figure in the works. ('Always' being a bit hyperbole, but not far off the mark) If there is an opportunity for a fan vote for a figure, voting for an upper tier character is almost like telling Hasbro to release stuff they would release anyway, thus wasting the vote.
In the case of Ultra Magnus, there was the CW figure, Siege, Kingdom, and supposedly a Studio Series in the works. And, while it's less common these days, Magnus still occasionally can be a white redeco of Optimus Prime, figures of which are always a dead certainty. The only way I would vote for Ultra Magnus in a fan vote is if it was Specifically Identified as either Robots In Disguise 01 Magnus or Animated Magnus. Otherwise, I might as well vote for a new Bumblebee figure.
To be fair, this was before Siege. Ultra Magnus fans didn't know how good things were going to get.