If you brought this up...
Here's a list of my suggestions. I did not play with TG3 that much, so if something's already there, just scratch it:
- Always align objects and the camera with the planet's "center of gravity" or make this option selectable - come on guys, it can't be that hard... I find myself in a killer mood each time I venture off from zero coordinates as camera movement gets really, really wacky. I would also like to see trees at equator and south pole to grow normally instead of growing upside-down, and people standing on their feet instead on their heads... Yes, I know what you're going to say - "Align to ground normal". Well, to be honest, that works only if you have a relatively flat land ahead. If you have, say, a mountain chain near the equator and would like to put some trees there, the placement gets crazy whether you use alignment or not. I'm surprised this was not brought up before...
- Improve heightfield control away from zero coordinates - somewhat similar to the previous point. Each time I place a heightfield away from zero coordinates I can see that the mountains are leaning towards the top of the planet, as if they were falling down. While it may give you some interesting results, this is awkward in other situations.
- Step-by-step measurements - It would be nice to have a measuring tool with which you could measure distances between multiple points or a whole path if you wish.
- More cloud types - That would really speed up preparation of many renders! How about storm clouds, cirrocumulus, stratus layers?
That's it I guess (for now.) Maybe I'll add something later.