Hi, you are right, this was done deliberately as apposed to other services.
The idea is that technically those two values cannot be directly compared. As bid orders represent only fiat currency which is actually present on the market and its BTC value only represents desired valuation and not always reasonable valuation. On the bid side there could be a lot of so called fake orders with extremely low price which could distort the view.

The same situation is on the asks side. The only difference that there are present actually BTC but their price also could be far from reasonable market price at the moment.

Anyway current priority is to focus on overworking the base of the system to support longer periods of data.
After this is done and stable then we can make significant refinement of the front end.

thank you for your support.