Check again. Without crossrange capability, the deorbit opportunities of something in the ISS's 51 degree inclination become farther apart. The thing about an emergency evacuation is that you quite likely wouldn't know very much in advance where the thing is going to land.

To confirm what I'm saying, I downloaded a copy of WXTrack, a satellite simulation package. Using the default settings, the software shows that if someone tried to make an emergency deorbit from the ISS right now, they'd have very few opportunies to come down anywhere near land for several hours.

Trama doctors talk about the "Golden Hour", the critical period after a trama when the patient has the best chance of survival. Since it takes upwards of 40 minutes to deorbit under the best of circumstances, any substanical delay can reduce the chances of survival considerably. Crossrange capability gives more deorbit opportunities per day to come down close to civilization.

You don't need a lifting body design to get at least some cross range capability. The Apollo capsules had some cross range ability. A lifting body design like the X-38 allows for better cross range than you can get from a capsule and might allow for a more gentle reentry, which could be significant in a medical emergency. The idea of using a parafoil is a good one because that further opens up the number of potential landing sites by at least a couple orders of magnitude. Lifting bodies have high landing speeds and require considerable piloting skill to land safely. The parafoil gets around both of those problems.