Tatooine is fun to explore and it was my favourite planet in KotOR too. It's that sense that you're exploring the inside of a Ralph McQuarrie painting that I found very enjoyable.
Speaking of KotOR, I just did the flashpoint that deals with what happened to Revan and...I can't believe they did *that*. What a let down!
Which one? The Foundry or Maelstrom? They're different.
Plus, I think part of it is the sheer contrast between the wide-open beautiful (if harsh) space and the claustrophic, badly-lit, neon Nar Shaddaa that you've just left.
Make sure you take the balloon ride.