Appreciate the update.
1 - What is the reasoning for splitting the condenser into two separate applications? I don't think this is a good direction, and adds additional complexity by eventually forcing new users to extract their posting keys for signing in to the separate social app. This slows down the signup process and will cause a drop in user activation. This also will require all users to only be able to easily access the social app on a browser with a password manager, otherwise they will need to copy and paste this key. A SteemConnect login option may alleviate this.

While I agree that the wallet needs improvements, such as a more clearly designated send button and a cleaner address-book for contacts, splitting it out and forcing posting key only is a step in the wrong direction for UX.

2 - Could you elaborate on how you plan to use Steemit's ad program to benefit all app developers? Would you consider burning STEEM with a portion of earned revenue?

3 - At any time, has the Steemit UI development team considered improving the already built in promoted post system to feature these posts embedded in other feeds to drive visibility? This feature has been superseded by bid bots, which currently deliver cost-less post promotion, as rewards cover promotion payments. The Steem blockchain can capture more of this value by better optimizing the promoted post system.

4 - At any time, has the Steemit UI team considered adding a tip button to posts for sending a fast payment directly to a content creator?
To see an example of this, check out https://alpha.weyoume.io, currently operating on a STEEM based testnet.

All the best. -Haz