NEW VARIANT IDEA: IMPAWNSTERS

I had an awesome idea for a new variant, and it could potentially be called something like 'Impawnsters'.

At the start of the game, both sides could pick a few pawns and choose a minor piece/pieces to replace those pawns. To your opponent, they would appear as ordinary pawns until you moved them differently from how a pawn typically moves. 

One thing that would be worth considering is: could they still move forward as ordinary pawns do? Considering neither knights nor bishops move forward; it would be impossible to advance these pieces without giving away what they were. However, this would still leave some fun mind games in place if you chose not to advance certain pawns (i.e. not moving your D and E pawns).

Let me know what you guys think of this idea, or if there are any glaring holes in how this variant would work!