The show is now available on iTunes, along with Chip and Dale Rescue Rangers, Tailspin, and Jungle Cubs.
While I do prefer DVDs, this is good enough for me.

I wish Chip N Dale Rescue Rangers, Darkwing Duck, and Duck Tales would all get their respective series on DVD. I wish Bonkers was DVD too. Why no DVD release for Bonkers?
RIP
Dimebag Darrell
1966-2004

I wish Disney would finish this up, along with the other series you mentioned. With Ducktales, they could do a full series set with the pilot put back at the start of the series (the version on the existing volume 2 set is on a disc with some of the later episodes which actually are in the correct order I believe) and maybe re-arranging some episode orders so none of the multi-part episodes have to be split across multiple discs (like on volume 3 where "Time is Money" is split due to those discs only holding like eight episodes per disc max).
I also wouldn't mind seeing "Transformers: Robots in Disguise" (from 2001), which was dubbed by Saban and then Disney bought Saban (eventually Saban became independent again but who knows where the rights to this show are now). If Disney still owns this show, they should release it in America.

At this point they're probably just waiting to release a better quality set. Here's hoping. But I wish I could get the 4th volume.