default nodes order

this module is great but I don't understand why, when I initially open the sort nodes form for a specific term, all nodes are arbitrary ordered.
This brings to unwanted nodes order in Views if I don't manually order all (tens or hundreds) nodes in that taxonomy term.
I would expect only dragged and dropped nodes have the weight field value changed

Example

I open the sort nodes page for a specific term (/taxonomy/term/[tid]/order) and I see weights are all 0 valued (in db field they are 0 valued)

node		weight
node_A		0
node_B		0
node_C		0
node_X		0
node_Y		0

I drag&drop node X in fist position and node_C in last position something like this happens:

node		weight
node_X		-2
node_A		-1
node_B		0
node_C		1
node_Y		2

This is what I would like to see

node		weight
node_X		-1  (or any other value lower then 0)
node_A		0
node_B		0
node_Y		0
node_C		1 (or any other value greater then 0)

I understand this is almost impossible (what happens if, from initial all-0 situation, I swap Node_B and node_C?).
Anyway, if this is not possible, I would like to see the possibility to decide what initial order nodes have (alphabetical, creation date, change date , etc.)