I am no Mac user and have never seen the program, let alone used it. Are these versions so significantly different that two tags are called for, or should we merge them?
I havent used it but I wouldn't do any tag modification till someone can verify if there is a version difference that would cause the questions and answers to become invalid. If there is no difference I am for deprecating the [sketch-3] tag and leaving one tag.
However, if there are multiple different versions we should try to find some more support from Sketch's community to help tag the questions accurately so the community can benefit from them.
I know in the past we've tried to reach out to similar program communities and they've treated us like it's a hostile take over.
It would be nice to have experts in the programs that are not Adobe to come along and make them better.