With the communication systems between referee and touch judge they have in place, the TJs are effectively policing offside anyway- listen closely to the ref's microphone on televised games and you'll hear them telling players that the TJ keeps picking them out for offside so to make more of an effort getting back.

Personally I'm in favour of only having one person making decisions out on the field however. Getting more people involved in the decision making process can add to inconsistency and confusion rather than provide clarity - see the final play of the playoff game away to Wigan last season as a perfect example of TJ, referee and video ref working in anything but perfect harmony.

I agree with Gotcha and Richie. This is worrying.