At the time this cartoon was made, Porky Pig (of course to be one of the Looney Tunes/Merrie Melodies biggest stars) and Beans (the Boston cat who sadly didn't catch on), had been introduced to viewers as schoolkids in 'I Haven't Got a Hat'. That was a charming cartoon with strong characterisations.
'Gold Diggers ...' makes both characters into adults, and not only that, Beans wants to marry Porky's daughter (who appears to be another cat, and not a pig ...). To do this he needs to get into Porky's good books by finding and guarding gold.
Some fun gags (Beans driving a car so fast he turns into a blur of lines) and the interest factor of seeing another embryonic version of Porky Pig - still not quite the classic version we know and love - makes this film more important that it perhaps would have been without those associations.