Reaction the lastest snapshots

Hi, im Soma, fan of the game since version 1.4.7.. To reflect in the latest snapshots, i think its exciting to see the lead item can be used to link mobs to each other, also a boat to a happy ghast. However the first thing that came into my mind is that is a great opportunity to furnace minecarts to be linked to other minecarts. So like it can pull up to 3 minecarts, but if the furnace cart touches a redstone rail it breaks the link, so we can have a separate rails system, also tweak thw furnace cart, like 2x the coals burning duration inside them. Thanknyou for reading my suggestion.