New rules are looking pretty good, especially the battery section with its new clarifications concerning lithium batteries.

Just a couple of things I want to raise; it's more likely probably wording than anything else and that is something that can come down to the opinion of the person interpreting the rules but:

4.2.5 Servo Control
It is not advised you use servo/ pot/ micro-switch interfaces, as these will remain in their last position with loss of power leaving the weapon active.
I know this is only advisory so it probably doesn't matter too much but the servo/switch remaining in its last position upon loss of signal can simply be remedied by connecting a failsafe between the servo and the receiver (or using a tx/rx's built in failsafe setting) and setting it so that the servo or switch returns to a preset 'zero' position, just as explained in the general failsafe section.

4.4 Remote Kill (Advisory)
Robots should incorporate a €œremote kill€ that should bring the robot's failsafe device(s) to the pre-set 'off' or 'zero' position via a switch on the transmitter. This is to allow for de-activation of robots from outside a fully enclosed arena and prevent accidental operation of controls.
Again this is only advisory, and again this may just come down to my interpretation of the word 'remote kill'. To me a remote kill switch is a radio-operated switch that, when switched, removes all battery power from the drive and weapon systems. Effectively you're removing your link by remote control. Contrast that with setting radio signals to zero (in failsafe) so that your robot won't move under radio control but power is still being supplied to all systems in the robot.
The description in the rules is of a switch on the transmitter that brings the failsafe devices to their pre-set/off positions. This can be achieved by turning off the transmitter (as is done during tech checks) rather than having a designated channel switch. So by that reckoning, every robot already has a remote kill incorporated and this rule becomes a little redundant.

That's also something I try to make sure I do after the end of every fight before the marshal enters the arena, turn off the transmitter so that the robot is in failsafe mode and shouldn't drive anywhere/activate weapon when the marshal is among 'live' robots. I don't know who else does this (several people I'm sure) but maybe something to try and encourage for those who don't? Discuss.

Also, is it worth putting the kilobot/beetleweight category into the weight limits? I know Kenny and Tom started it up as a fun, unofficial class, there haven't really been any fights yet and a specific arena isn't yet completed but there are a few of these machines surfacing now and I reckon several more are on their way. Just a thought (although may be best to leave it just now until the class has grown a bit)

Anyway, that's my tuppence worth. May just be rambly rubbish but at least the thread's here if anyone wants to raise some more valid issues