I know exactly what you mean!! I've got way too many fics in my mind. None have deadlines but one is something I can't seem to finish.

Are we the same person? I also wrote a madcap comedy that went just dandy until the last two chapters and then...ACK. I finished it by reminding myself over and over how much I hate unfinished WIPs.

Also, I highly recommend writing one-shots. All of my Literary Society pieces are written during long fic down-times, as are some of my other little fics. And add me to those looking forward to the MCU fic!