I am against the unlimited weights for several reasons..
1. There are a number of e-mopeds currently for sale that the sellers claim only have 200 watt motors and weigh 39 KGs,therefore these are bicycles and qualify as pedelecs. I recognise one of those scooters,it weighs 90 KGs and has an 800 watt motor but the seller claims 200 watts. The police find it very difficult to determine the power of a motor but weight can be easily checked,remove the weight limits and every one of these motorbikes will,with a 200 watt sticker on the motor be bicycle legal,the Dutch have just banned mopeds from cycle tracks,we could be opening the possibility of such machines having access to all our cycle tracks.
2. The 250 watt and 40 kilo limits promotes the design of lighter bikes,I think e-bikes are generally nicer to ride if the weight is down to 20 kilos or less,especially if you want to ride the bike unassisted at times.
So,nice the power is in line with Europe at 250 watts,nice that throttles are to be legal,albeit with type approval complications but I like the 40 kilos weight limit and will write to the D f T accordingly.
Am not against these e-mopeds,I think the bike 'Nicom' is a wonderful little moped,sold under the Sachs name in Germany and should have an easy and inexpensive means of registering/taxing/insuring but they should be motor vehicles not bicycles,road use only.
KudosDave