Liiiies!
Arg, I really liked the first couple. I mean, the second couple seems fun too, but I was really really looking forward to seeing where the first one goes.
Also, maybe if you don't want to have to explain every time why it stopps so suddenly, you could combine the parts that belong together and artificially seperate them into finished oneshots? So like 1 + first half 2, den make 2nd half of 2 + 3 a new chapter (sry I'm not good at explaining).