When the user currently want to insert the doc aaa.pdf into doc bbb.pdf after page 14 of altogether 37 pages then too many steps and information are required. The user has to specify in the merge plugin:
aaa.pdf from page 1-14
aaa.pdf from 15-37
This is very unconvenient. The user must investigate e.g the total number of pages of doc aaa.pdf
In an improved GUI the user should only specify the base pdf doc, the doc to be inserted and the position:
Insert <bbb.pdf> <after|before> page <14> of <aaa.pdf>
If the page number is omitted the 'last' resp. 'first' should automatically be taken.
This functionality can be added to the merge/extract plugin or a new plugin can be created