Okay, here's mine!
Like Karmeck, I started out by saving some quick test shots from all over (even keeping the UI in so I could see from the minimap where I was), and then going back to redo the best ones. I made sure to try the 4:3 crop on all of mine as well to make sure the composition still worked and I hadn't put the key features across the whole screen.
Hutta: I'm not a big fan of Hutta, the only thing that immediately sprang to mind was 'pipes'. But then I realised Nar Shaddaa is right there in the sky, I must have never looked up in the right direction before! So it ended up being a search for the best frame for Nar Shaddaa. It really made me appreciate how much detail they put into the little things - the city lights 'sparkle', so I had to wait for them to light up just right.
Some rejects with more of a pipe focus: 1, 2
Mek-Sha: This is actually the first planet I went to for this contest, because I really enjoyed the story and the setting and I knew I was gonna find lots of good shots.
I started out with the big vistas, but my final chosen shot was this alleyway I stumbled upon that gave a good composition and shows a bit more of the seedy side. I'm both loving and feeling jealous that a couple of others in this thread found my hidden gem alleyway too!
Makeb: What I really wanted to capture on Makeb was the resort-planet landscape, all broken up by the industry.
I really love the slanting, cracked ground in the cities. I tried to capture that in a couple of the rejects (still with UI): 1, 2. In 1, I really loved that the fountain itself is slanted but the stream of water is vertical! It's such a tiny detail though, not even visible in this small version I saved. I know it'd get lost.
I'd also really wanted to get a shot of the light bridges, they're very iconic Makeb, they scare me so much when I'm playing and need to double-check I'm not walking into a chasm. I found them really difficult to capture though, you can only see them properly when they're slanted away from you. I couldn't get an interesting enough shot with it being that restrictive.
Ossus: When I think Ossus, my main thoughts are the farms, people trying to start up something green and new in an inhospitable place. So that's what I was trying to capture here, while still getting the ruins in.
This is actually the one I waited longest for, and I STILL didn't get what I wanted! Every now and then there's a flash like lightning in the sky for a split second. Looks great, but I only saw it every five minutes or so. And of course the two times I did manage to capture it, the windmill blades were lined up all wrong...
Some rejects still with UI: 1, 2. I really liked both of these, but I figured 1 would be what everyone sent in (this thread is backing that up!), and 2 wasn't Ossus-y enough.
Korriban: Like a lot of you I immediately thought of the Valley of the Dark Lords because it's such an iconic location - not only in SWTOR but also throughout Star Wars. I decided against it because I figured lots of people would do that, and get better shots than I could. So second choice was inside the Academy. This is one of the most obvious views, but I waited very patiently to get the guards bowing but also nobody in shot! (This is such a lovely little game detail - I have heard the guards will bow to certain players and not others, based on level or whether they're a Sith Lord or something like that?)
Yavin IV: I took a trip around the Yavin IV temple and jungles like you all, but nothing really grabbed me. For me though, Yavin IV is one of the planets that's all about the two factions working side by side, so that's what I tried to capture.
I love that this vista also gave me the temple in the distance and Yavin in the sky, and I quite enjoyed picking out which of the many ships flying across looked best. The timing had to be spot on!
This was a hard one to get and still work with a 4:3 crop, I really wanted to be able to fill the screen. The other annoying thing was the Taxi marker above the droids' heads - I initially tried to get this shot on a Republic character but switched to an Imp to get rid of the Republic taxi marker. Did anyone find a way to remove these? The nameplates can be hidden easily but the icons stay there.
Ord Mantell: I love how so many of us have waited patiently for those same three ships for our sky! This one was annoying to get, a couple of enemies on the right kept on respawning while I waited. In they way of the shot and in range to attack me, but I didn't want to move and lose the shot!
Tatooine: This was probably the hardest planet for me. In theory there are some great views, but I found them really hard to capture. I think a lot of the problem comes from the fact that the twin suns are so iconic, so you want to get them in...but that means you're facing into the sun and everything's in shadow. I gave up and went for minimalism.
Tython: This was the result of trying to get a shot of the Jedi Temple where I wouldn't need to wait forever for people to get out of shot! But I like that I've got some good foreground interest going on.
Zakuul: This is my favourite. I had a hard time on Zakuul at first, because I didn't find much that wowed me in the open-world parts. But then I remembered how we actually see most of Zakuul in the chapter instances like this one (KotET 6, Dragon's Maw - Vaylin's party). No dodging enemies here, so I had tons of fun running around the palace and got some great shots, I wish I'd saved my rejects!