Copy a sequence and insert before frame

Suggestions, Wishes, Ideas
#1

Please consider this I think it would make animation that much easier

#2

Let me clarify right now there is no way to copy an entire sequence.nor is there anyway to insert a frame or a series of frames before a frame you can only insert after not before any help is greatly appreciated, Thank you

#3

You can select frames on the time line and move it before or after other frames using drag and drop.