The benefit of the full range lift is full range strength. You may do the partial DL, often called the Health Lift, instead. You may also do both, using the Health lift with more weight. One can also go further and perform a deficit deadlift with a larger ROM than the normal one - it's all good, and often making progress on one of them yields improvement on all three.
It's a mistake to assume the partial ROM is somehow safer - it is only safer for someone who hasn't bothered to acquire the ability to do the full range version, and everyone ought to be able to do all three.
-S-