I would love to have the ability to do what TextPad does.
You select a column of text, hit F9 and it sorts all the affected lines but using the column text to sort them by.
e.g. If you highlighted the fgab column (second from the end)
hit f9 and it sorts the entire rows like this such that the column is now abfg
This is hugely helpful when trying to sort something like log data where there is a timestamp that is out of order so you can see what happened in the right order. Or when you just want to get everything with a certain prefix/suffix together etc.
These options would be great as well