You want to replace the bidding system, by allowing an extra NC move before the game begin?

That sounds strange. If you want to eliminated the bidding system, just adjust the starting forces of the Axis, up to a point where the game becomes ‘even’.

My recommendation, to make the game even, would be to:

Add 2 extra inf, to be placed in UKR and +6 Starting IPC to Germany.

…or

Add 3 extra inf in UKR.