Merge the stupendous amounts of tags!

This probably has already been suggested before but I think we can all agree that there are too many obsolete/underused tags. As you can imagine, this can make looking for the "Right Answer” (for your usecase) quite tedious.
 

My suggestions:

1. Verify tag necessity by the community/MVPs: 
   Community method: Somewhat similar to the way ideas work; reach a certain threshold of upvotes and you'll have a new tag created.
   MVP method: Same as community method but exclusive to MVPs
    
2. Tag suggestions on posts:
   In some cases you sometimes forget to add a relevant tag or you weren't aware that a tag existed in the first place. 
   Being able to suggest tags on posts without having to mention the one who posted directly in a comment would be a neat feature.

"Why not pick first one if it bothers you so much?”
Sometimes you use uppercase to find tags or and vice versa, either way you'll have 2 different tags which essentially are the same thing. Like.. Just look at this...