What would you like to see in a twitter application?

What are some features that you wish followliker or tweetadder had? Or how would you improve existing features? I'm developing a similar application and I just wanted to hear some feedback for what the community might want. Thanks

Update the accounts bio/upload profile picture/header. Basically you can mass customize the account

It's the account creation stuff that's really way more of a pain than it should be. Make it easy to create and verify accts, populate with pics and bio, and you're already way more valuable.

Also missing from FL... The ability to mix filters. For instance, if you have 100 accts automatically retweeting everything your primary acct does, it's pretty obvious they're bots. If you could add filter to say retweet tweets from this user that contain this keyword or hashtag only then you could rotate it around the army for more natural footprint, and also to bring more emphasis to the tweets you choose to put extra muscle behind.