Repeat commando instead of "Take!" - Ok!

With more gym climbers getting outside this year, it is important that all we experienced climbers take some safety responsibility. Last week, I was climbing alongside some outdoor beginners and one thing I told them was to repeat commandos. Once I get to the anchor and say "Take!", I think it is much better to repeat this instead of the belayer just saying "OK".

If the crag is crowded, it just might be that one guy screams "Slack!" ore or less the same time and another climber screams "Take!" If unlucky, one belayer can take in rope at the same time the climber wanted some slack creating possibly a fall or a situation with uncertainty.

Other safety problems I have witnessed often this year is top-ropeing directly in the clip in, or thread the rope in just one anchor ring or trying to top-rope from an anchor two routes to the right. Another issue I think should be avoided is to scream instructions to an uncertain climber having done a back-clip. It is much better to just let the climber hang in the rope and fix it later rather than to unclip and clip again. From a good safety point, at least in Sweden, it seems like half of the new generation climbers use a helmet. Do you have any other remarks that could improve safety?