Like @Remah said, I’m not making decisions on what gets implemented. 
Sorry if my response sounded harsh or rude.
Though I don’t know enough about your community to make a recommendation about whether “questions and suggestions” is too much for one category, but do think that changing the slug to “questions” or “questions-suggestions” would solve the problem you describe.
I can’t remember for for sure, but I think that when you change a category slug, Discourse automatically creates a permalink for the old one, so any old links to it are not broken. You can check after you change it. If I’m wrong, you can find permalinks under /admin/customize.