IMO the term remastered or enhanced is more of a buzzword marketing ploy to boost sales. You're right, the remastering process nowadays, as ordered by record exec's is simply to enhance sound by increasing the loudness...and compressing for tighter, sharper sound. This loudness factor has become common in general mixing and mastering of new records today. I heard the remastered records on studio quality Cerwin Vegas...the better the speaker quality the more noticeable the sound difference...also more noticeable is analog to digital remastering.

Personally, i think the loudness factor in remastering records is a terrible idea as it takes away from the emotional aspects and dynamics of certain song parts. I'm still a huge fan of original vinyl sound and prefer it over digital. All said and done, remastered records are nothing more than a new revenue stream.