I downloaded the Tweetie for Mac client this week. I didn’t know much about it except that I kept hearing about it from a bunch of different twitterers.
It’s a great application with a lot of potential. I love the use of core animation when you switch between the side bar settings, and I think the interface is intuitive and easy to use.
4 Things I’d like to see in the first update

1. A window to tweet right from the interface
Seriously…I have to ask for this?
2. Turn off notifications for multiple Accounts
Let’s say, hypothetically, I managed more then one twitter account (which everyone knows I do not). The reason that I don’t use Tweetdeck is because so many of my lists were parallel lists. I don’t need to read tweets from one account and then read the same tweets in another account. I would like the option of turning the blue “new tweet” notification off for individual accounts instead of globally across all accounts. (For all I know, this is actually possible because there is a setting for this in Preferences, but it didn’t look account specific so I didn’t mess with it).
3. I hate dock icons
(The “3.” in my graphic was as close as I could get without spending the time to create a downward arrow). I hate dock icons, especially when the application falls into the “Menu Bar” category. (Last.fm, Evernote, Growl, Dropbox, etc.). Tweetie clearly falls into this category, and a menu bar icon is there by default. Most applications allow the user the option of turning off the dock icon if they choose as well. I don’t need it. It’s extraneous, and more to the point: it bothers me. Do I speak for every user, clearly no. That’s why I should have a quick yes or no to turn it on or off based on preference. Problem solved.
4. A way to save tweet drafts
You know…for people who put way to much time into crafting the perfect set of 140 characters. (Or less if you’re trying to encourage people to retweet you).
…and a Late Addition:
Since @replies automatically show up in my twitter stream, why can’t the new replies indicator turn off at the same time as the new tweet indicator? I see the value of collecting the @replies in one place, but if they’ve been read in one place they should be marked as read globally.