You've got the point,weight is the disadvantage of the trike,the trike weights 28kg now with the basket, too heavy of mild ion plates and tubes,I'll try to lose some weight of the kit,but the cheap fat bike also a little heavier too,if the bike weights 14kg, say a common 26" mountain bike,the whole trike(with basket) 25kg should be OK,and equipped with e motor assist should be better

These 2 danish leaning trike are known to the public