Iota has unprofitable mining so one could say I took that idea from Iota (although I had the idea for a while now, but I won't deny that Iota focused me to concentrate on it again when I started this thread). Also from Iota (and a bit from Dash Evolution but I was already working on this design I just was able to merge some ideas together to jump some hurdles) my design inherents some aspects of a DAG but the partitions are intra-block and are forced to converge at each block announcement.
Note I am not 100% sure (yet) I don't have a flaw in my contemplated design. I need to go quiet to work through all the details of that and a zillion other TODO.
P.S. readers wondering what happened, I took CfB off Ignore due to a civil discussion we had in another thread.