1) Remote Buddy does sort albums by track number when inspecting a 
particular album, as far as they are available - and falls back to 
names otherwise. It uses alphabetical sorting when displaying all 
tracks of an artist as if you have like 50 albums and singles of one 
artist, it's much easier to find a particular track that way.

2) The Remote Buddy playlist is used to work around iTunes 
"features" ;-) .. the main library playlist may have a search 
attached on it, be sorted by a specific column, etc - a lot of 
conditions are possible that can lead to tracks being skipped or 
played in wrong order. Also, it may be diserable to loop a single 
album - which is not possible when using the complete library playlist.

Best regards, 
Felix