Forte nods, that's much better. He doesn't want cut out a layer of protection. "It would distract them from what they need to focus on," he answers, putting it simply.

Forte same reason Zero mentions, he had slowly modified his own wings to make them smaller and easier to fold up. He couldn't keep them from being a target, but he could make them a harder one. The same thing isn't possible for wings big enough to act a shied that can cover two people.

"And they could get hooked on something when everything comes apart." Even if they're strong enough to not get ripped off, there's some issues with the design.