"Record Payment" dialogue lacks required field and is clunky

To reproduce this issue:

• create a "pay later by check" payment through a public-facing online contribution page.

• then go to the 'backend' administrator area

• click "more" > "Record Payment"

There are two issues:

1. The payment method is not marked as a required field, but it is a required field, generated an un-anticipated error

2. This may be more an opinion than a bug, but I think it's a reasonable assumption that when recording a payment for a pending contribution, that the amount entered is the same amount, and thus can be prefilled. I feel like more people do full payments than partial payments. Is it necessary to type the amount one time, and then type the amount again a second time when the check arrives?