I like him but not as a stallion. He is a bit long backed and his hind leg angles are not correct (lower stifle would help IMO). He may not be butt high but he is certainly at the least even (from this set of photos). He has a good front, nice shoulder and a good neck and head set. He has good bone.
When I say I do not like him as a stallion it has to do with conformation. I believe that a stallion needs to earn the right to keep his 'equipment' and use it by having very good conformation and working titles (your horse may have working titles). These need to be repeatable under different judges and scenarios.
All that being said, remember this.. Opinions are worth what you pay... ;)
I like Cremellos. My first horse was a cremello though he was very white in his body and off white in his mane and tail.. one Watch eye and one solid navy blue eye. I have never met a cremello I have not liked as far as attitude and capacity to think and solve puzzles goes. Purely anecdotal but I often have wondered if the coloration is tied in to that attitude and puzzle solving ability.