Hi Timo,
Regarding position of images it will be nice to fit it the place of cursor. Also it will be nice to have possibility to adjust size of the image. At least big and small.
Another Idea is to have possibility to switch between thumbails and inline view. Probably not all of images related to text. Related ones is inline, other inside bottom line.
Regarding your mock-up shown in the another request it look like feature "Make the main picture of entity".
But probably any fastest way will be good enough because people want feature at all. After that you can collect opinions, statistics of usage, etc.