Point Dutch Sale with full capital used on the bid

[martinkrung]

How Point Dutch Sale works right now:

On a bid of 1000 Dai with a price of 2 Dai per token you will make a bid for 500 TKN.
You are guaranteed to get 500 TKN at the end if the bid is above the settlement price. If the settlement results to be 1 Dai you will get 500 TKN for each 1 Dai and 500 Dai back.

This make sense in the real world, if you buy single unique goods in the thousands (Dutch Auction original purpose).
If you bid for 1000 flowers you don't want to end up with 2000 for a cheaper price. You want to get 1000 flowers.

Describe the solution you'd like

If you invest capital, this makes less sens, because you think about the size of your investment and may want to get token for the complete capital.

I think there is easy to change this and having a settlement price which uses the capital you invested to give you the token you allocated capital with.

So in the example you would end up with 1000 TKN for 1000 Dai!

Possible Implementation

I think it's easy if the off-chain calculation works, on-chain this wild consumes more gas than the normal sales because the calculation has some additional complexity.