IMHO most of MariaMole's users developed on Arduino and make final devices with AVR microcontrollers. So IDE should provide all possible AVR crystals(with/without bootloader) and Arduinos. But there also should be user-friendly Hardware management .
My proposition is two lists as shown bellow:

PS: ability of AVRs fuses writing will be great!
IMHO most of MariaMole's users developed on Arduino and make final devices with AVR microcontrollers. So IDE should provide all possible AVR crystals(with/without bootloader) and Arduinos. But there also should be user-friendly Hardware management .

My proposition is two lists as shown bellow:
PS: ability of AVRs fuses writing will be great!