Another thing I'd like to see in the quick reply window is the ability to open an attached image for preview. When you attach various images, these are pretty small, so being able to see them at full resolution before pressing reply would be good.
In 4chan if you're using 4chanXT you have several icons at the bottom
- pencil: edit in Tegaki
- pointing arrows: compress to jpg
- eye: preview
- crossing arrows: randomize filename
- looping arrow: reset filename
- cross: remove file
- plus sign: dump list
Currently 8chan can edit images in Oekaki, it randomizes filenames if you use the "Strip Filenames" checkbox, and you can remove a file, but the other options are missing, compressing to jpg, previewing, resetting the default filename, and "dump list" is basically a way to queue various separate posts, with or without images.
Another thing that'd be good is the ability to re-order the images. I often attach more than one image to my post. It's an issue if I attach 5 images, if I did it wrong the first time, it's a pain to remove them all and attach them in the proper chronological order, for example.