I've been working with a bloodhound in tracking this winter. The dog is a young bitch, just a year old. She's big and strong, with a lot of energy. The handler has done some search and rescue training, and the bloodhound guys she has worked with tell her that bloodhounds *need a job*. From what I've seen, compared to bassets, the temperament is more aloof, not as laid back/easy-going as the average basset. Dog is very determined to follow scent and can literally jerk the handler off her feet, if she's not careful. The dog is also not dependably food-motivated, and that could be a problem in training--for me anyway.
From what I've seen, they're not just bigger, goofier bassets. I think researching this particular breed is a very smart thing to do--will be interested to hear what other bloodhound fanciers have to say.