Before I start making "wishes" I'd like to first give you a BIG thank you for making the best chess gui I've used for Linux. Its clean, easy to look at, stable, and works extremely well.
The only feature I wish it had is an engine VS engine feature so I could watch how engines play against each other in hopes of finding techniques to add to my own playing style. Other than that, I think eboard is near perfection.
Keep up the fantastic work!