Standardised width - yes (too many varying bike lengths, can make it bigger than a bike to make goal-keeping more technical, easier to reset cones after impact)
Standardised height - yes (for all the reasons we agreed a 'standard' height for the league)
Use of a crossbar - not sure, would be interested in playing with it in place.. but I can only think of a couple of instances where it would have benefitted the game being played and a lot of instances where it would be annoying
Standardised width - yes (too many varying bike lengths, can make it bigger than a bike to make goal-keeping more technical, easier to reset cones after impact)
Standardised height - yes (for all the reasons we agreed a 'standard' height for the league)
Use of a crossbar - not sure, would be interested in playing with it in place.. but I can only think of a couple of instances where it would have benefitted the game being played and a lot of instances where it would be annoying