I'm curious if making a funnel for a FE card would help temps and also act as a support for the card when transporting the case.
I think that FE units shouldn't have that much sagging weight on the blower end, and also I'm not entirely sure if by doing this you are really helping the blower card. With open air cooler, you prevent recycling of hot air by this partition, but with a blower you would block it from taking fresh air from the side in horizontal position.