The only thing that sounds wrong to me is the idea that the cultivar name with the most "thumbs-up" votes should be listed first. In the case of roses and clematises, for example, there can be many cultivar names, but there's only one exhibition name, which is the name currently used as the main one. I don't think member preferences for other cultivar names should supersede the accepted convention of listing the exhibition name as the main one. I think the database architecture currently ignores the thumbs-up votes for the cultuivar names of these two plants and gives pride of place to the main name chosen by the moderator. I hope that will remain the case.
