A spoked drogue can cause parts of the probe or drogue to become detached, causing damage to the receiver. Some receivers are more prone to engine damage than others, by virtue of the relative positioning of the probe and engine intake(s).
A damaged drogue might cause hose instability; if the drogue detaches following the incident, hose flail may damage the tanker.
Having to divert to shore after your only engine has suffered damage must be somewhat thought provoking, particularly at night...