Should the tags table-of-contents, list-of-figures and list-of-tables be merged? After all, their implementations are pretty similar and questions and solutions applying to one of them typically apply to the others as well.
I think this might be confusing for casual users of the site. That the implementation is similar is less visible than the difference in semantics.
I don't really see who would benefit from this synonym. People with a special expertise in these macros looking for questions to answer? People wanting to earn tag badges?