1. button size - Settings > Skin Settings > Cockpit > Number vertical of menu buttons
Select from 4 to 7 and all buttons are affected
Spoiler: image
2. bmp -> jpg - try removing the ; from the screenshotfilename="\android_linked_root\captures\capture_%02d.jpg" line in your sys.txt file.
3. Alert Points - update your Pongo skin [Only registered and activated users can see links. Click Here To Register...]
EDIT:
2. bmp -> jpg - Only the Avic apk save the image in the .jpg format, the other apk regardless of the sys.txt configuration save in the .bmp format.