Hi Jennifer,
Robert started a poll regarding our wishes for firmware. You can find that link and our responses here.
https://www.mobileread.com/forums/showthread.php?t=89134
The main thing I would love to see is file management, like LBook has. I would like to be able to copy and delete books, as well as the ability to open epubs in Coolreader, without having to change anything on the epub. With LBook, you just do a long press of the number of the book you want to open, and it gives you the option to open (in CoolReader), copy, or delete the book. If I could choose just one option, I think I'd most like to be able to open epubs in CoolReader without changing the name of the file on my computer.
Although I like LBook, if Astak came out with a similar firmware I'd definitely try it, as LBook really seems to slow down my Pocket Pro. Page turns are fine, but the initial time it takes to open the book is much slower than the Astak firmware.
Thanks for asking.