Yup. 3 options for the penalties is a bit thin given about 80% of them are scored. But getting the balance between accuracy and simplicity is the key here.
I've always thought it should be five options, for starters (top right, top left, bottom right, bottom left, centre) but there's a case for three options to tie-break inside five penos.
The way I was thinking was:
1) Each manager submits, as currently
2) The peno admin run two sets of 15 choices ( 5 x RLC ) through a randomiser, one for each keeper.
3) If it's a WTF? keeper it's irrelevant
4) If it's an awesome keeper, for every peno he has two values: what the manager said and what the keeper's instinct tells him. If the manager got it right, fine, if he got it wrong the randomised keeper instinct kicks in and may make the save.
5) What I'm not sure about is whether to make it so that it can kick in twice for awesome and once for solid regardless of result, or if it should kick in every time until there's two saves resulting from it for awesome or one save for solid.