I rather like Queeg's E82 - which inspired me to drag out some of my forays into '46 German whiffery and here's one I did a few years ago.
I call it the E79, based on E75 running gear, with a scratch hull using Panther upper parts and a much modified Airfix Leopard turret, this is my 1/72 take on a standardised design for a higher speed medium tank.
and here's how they look after casting !
They pop up on ebay from time to time..