didn't read the entire thread, but I'll throw in two suggestions - perhaps already made.
WOOD handles. More comfortable than steel shanks, IMO&E.
Split with a splitting maul and/or wedge.
I put a cut across the block with the chainsaw and use three steel wedges and a Canadian splitter (maul) to drive them.
This way I can split 24" section redgum...just make the cut deep enough.
I also prefer wood handles.
