Summoning old comrades wasn't an easy thing to grant. The skeletons in the crypt were dying without his presence so obviously he didn't end up receiving their consciousnesses.
As for the named, he obviously let them all out in the crypt. Where exactly was he supposed to get these old comrades from?
Ed had a plan.
'It's about time I make orc skeletons' The orc skeletons could come back with their previous consciousness. Per usual, this was technically an experiment. Would an orc that was revived into their now deceased body be able to cling onto life?
Ed hadn't forgotten about the experiments with drop items, if the consciousness and body weren't compatible the item would break and the consciousness would fragment.
On that note, with the previous research results backing up this experiment, Ed believed the results would be optimistic.