It would be great if the composite glyph wizard also copied the kern pairs from the original character. For instance, when the ‘ë’ composite is created, all the kern pairs for which the plain ‘e’ character were included were copied to the composite ‘ë’ character.
At present it is very, very tedious copying all those values individually after the composite glyphs have been created.
This could perhaps be achieved by allowing kern pairs for a font to be exported/imported. If the pairs could be exported, some grep work in a text editor could extract pairs containing the original character and then copy them and substitute for the composite character.
However it is achieved, this feature would be awesome.