Okay, so Bob, Clonea, and Mommasboy all make suggestions. They all think that their own suggestions are the best. This is the underlying assumption, if you can demonstrate that people spend a significant amount of time suggesting things and then NOT voting for them, then by all means my argument falls apart...
S1: Bob
S2: Clonea
S3: Mummasboy
Jane, Moe, and Curly vote S1, John, Jack, Jill, Cloneb and Clonec both like S2 and Yomumma loves S3 along with Larry
4 S1: Bob, Jane, Moe, Curly.
6 S2: Clonea, John, Jack, Jill, Cloneb, Clonec.
3 S3: Mummasboy, Yomumma, Larry.
So we have a contest. Now, lets remove all the people who proposed stuff...
3 S1: Jane, Moe, Curly.
5 S2: John, Jack, Jill, Cloneb, Clonec.
2 S3: Yomumma, Larry.
And we see that their combined votes had absolutely not role whatsoever in determining the outcome. If, on the other hand, their votes still existed, but were restricted rom their own ideas, they need to choose their second-place proposal. Clonea and Mummasboy both settle for S1 for being pretty. While Bob succumbs to S3 because "Red goes faster"...
5 S1: Jane, Moe, Curly, Clonea, Mummasboy.
5 S2: John, Jack, Jill, Cloneb, Clonec.
3 S3: Yomumma, Larry, Bob.
With just that little change we suddenly have a situation in which the votes of suggesters become relevant to the outcome! It is a better system, although is usually only relevant with smalle numbers of voters.
If I thought it would work I would propose a preferential system. A good one is everyone voting for everything in order of preference. You then take whichever preference has the least primary votes and remove it from the running, everyone who primary voted for it has their vote preference decremented by one(second choice becomes first choice). After than you remove the lowest remaining one, and decrement ITs primary votes, and if any then become primary votes for a missing entry they get decremented again until their primary lands on something still available.
Bob: S1 S2 S3
Clonea: S2 S1 S3
Mummasboy: S3 S1 S2
S2 has fewest votes:
Bob: S1 S2 S3
Clonea: S1 S3
Mummasboy: S3 S1 S2
S3 has fewest votes, only S1 remains! You can still have relevance even if your primary fails...
But this is fiddly and nobody is going to bother.
Another option is weighted votes. Everyone gets a 4, 3, and 2-strength vote.Bob: S1 S2 S3
8 S1: Bob4, Clonea2, Mummasboy2
7 S2: Bob3, Clonea4
6 S3: Bob2, Mummasboy4
6 S4: Clonea3, Mummasboy3
But this gets into problems if people submit multiple proposals, but at least they still need to prioritise their own suggestions. It is also difficult to keep track of whether the numbers are accurate, because of all the character spam, and the voting panel can get large and start overlapping, not to mention all the extra addition that needs to be kept straight.
Fundamentally, the problem is that we are using the worst voting system in the world, the one that elected Thump.