Lee may not have incorporated mLeaders into his routine yet, but here is what I have. Please note that this will not copy mleaderstyles, but it will copy text to and from mleaders, tables, attributes, dtext, mtext and dimensions. In short if it contains text, this routine should handle it fairly well. You can also copy a text item to multiple pieces of text, set increments for numbers and even type text to enter instead.
Please note that this code heavily relies on code from Lee Mac and a few others, which should all be documented as far as I am aware. That being said, if you do see code of yours in this routine and it is not documented, please let me know so I can fix it.
Also, if you find bugs, please let me know that as well.