Nothing different in that regard is in the works now. The SCX - 60 has been running for over a year now with no significant problem of spur wear. Also no such problem in the X - 60, which has a body almost as open as a SC.
In all our mid-motor experience (We've had more years in mid-motor than all other current manufacturers combined, with thousands of cars and trucks sold world-wide.) we've never seen anything beside one or two very odd incidents of premature spur gear failure. No Team driver runs any sort of cover.
After 5 years of making mid-motor cars, we would have a gear cover if there was any real need for one. It's just not necessary.
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