When you make an add-on, you should be OPEN to suggestion. This topic isn't as necessary as you think. If you make add-ons, of course you're going to get suggestions. Instead of being a community hating jerk, you should probobly tell people what you think about the suggestions, but this doesn't mean you immediatly say "forget you bitch", it means you should calmy say each time you get a private message and/or post, that you aren't taking suggestions.
Besides, some players have great ideas, and not every player requests a rapid-firing-turbo-nuke-launcher, some actually ask for rare unhead-of weapons that can actually be fun to make.
Try to actually like your community instead of being a jerk about it.