I cant remember if this was the same on the old forum, but posting pictures is really irritating. Now maybe its just my process, but man its starting to get to me.
When im doing a brain dump after a weekend of building i like to attach just a few pics, document what they are about, than attach a few more... repeat.
Everytime you tell it to do a thumbnail, it jumps you up to the post section, and than you have to scroll down and find the thumbnail for the next picture, and it jumps me up again. Now on a short post its not a big deal, but when you have 20 pics its a lot of scrolling back and forth if your not using the post all thumbnail button.
Also the placement of the attach button is very irritating on long posts as after you hit the preview button you have to now scroll past twice as much posts. The part where you enter and the preview box.