I'd buy these series (grouped/large volumes with at least a hope for completing the series) from Disney DVD without a moment's hesitation!
DuckTales
Gummi Bears
Darkwing Duck
Goof Troop
Aladdin the Series
TaleSpin
Chip n Dale
Quack Pack
Gargoyles (please let there be a 2nd season 2nd vol!)
As far as the injustice being done Quack Pack and Goof Troop, I haven't yet decided whether or not to cast my support for these products. There's a good review of Quack Pack vol 1 at ultimatedisney.com (I am new so I can't link yet). I don't know if by not purchasing it, the statement is that "Consumers have no interest in this show" or if Disney would get the drift that the 3 volume thing worked for VHS, but not for modern media standards. (At least for remotely serious fans) I've tried to find contact information or any information on Disney DVD (DuckTales/ChipnDale) releases on their website - what a mess that place is. Impossible to find anything really. I'm very disappointed by the way Quack Pack and Goof Troop were handled.

I'm curious to see if 'banned' episodes of the various Toon Disney shows will appear on the DVD sets, sure hope so.
Example (from Wikipedia)
There is an episode of this series that has been banned from television. The episode Hot Spells is about Gosalyn wanting magical powers like Morgana. She is unable to attain them at the speed she desires, and, becoming impatient, she is easily maneuvered by the devil in order to access forbidden knowledge to attain this power in order to force Darkwing to relinquish his soul to save her. However, the demon makes the hasty mistake of simply lying to her that the contents of forbidden knowledge room were replaced with permitted material, which meant Gosalyn honestly believed that she was allowed to use the room. This mistake means she is actually innocent by a technicality, although she should have asked one of the librarians to confirm this claim, thus allowing her to save her father. The very fact that a Disney-related show had any reference to Satan (and was even allowed to air a few times) is unusual.