I think that taken pieces should be arranged in two lines - one for the blacks and one for he whites. Material score should also be displayed.

Yeap

I agree. . . taken pieces should be placed in two rows. . .Come to think of it, there is a great number of players over the fifties. . . and the eyes also go over the fifties.

As far as I know, the Administrators of “Chess On The Web” are working on it, as in other improvements.

Just wait.