I always think a lot of Series 4 was desperate to show off the Eye Shield and the footage they had - one can often tell by the way the camera swings round from side to side unncessarily to capture more of the background. The problems seemed to occur when the Eye Shield became an escape from normal directions. In later series, whilst the eye shield was used sparingly, it was no longer used as a tool for teams to avoid guiding a dungeoneer out of an awkward spot. However, in S4, it was rather bemusing to see a dungeoneer scuttle off at some rather poor angle towards the door, and holding up the Eye Shield miraculously drew them into the right direction. Overrated and overused with its introduction, better in later years.
