The Development team might not always answer but they will look at ideas, suggestions etc and they will look at how many others want the same features and they will create new features often based on the most popular suggestions on UserVoice.
Your other option to connect directly to the development team is through the email address available through the Bug Reports option in App Settings > Help on the app.
If you have posted your feature requests here and in UserVoice there is nothing left but to wait. They will not jump straight into developing something unless A) It's a popular idea B) They can see a benefit where the users can't.
Continuously posting in a user to user forum won't get your feature requests added sooner.