At the end of the last post, I suggested that I had eliminated the "zero-level" in my world. This is true. I did it with this.
If every individual's base hit points are determined by their mass, and a "hit die" is defined as the composite of that mass, than every creature by definition has at least one hit die. Gygax and cronies decided that a suitable solution to things having less hit dice that a leveled character was to define them as having half a hit die, or a quarter of a hit die, or a die 8 minus 1, or other such garbage; when I created the Mass Effects On Hit Points rule, I eliminated zero levels ... and unfortunately, I eliminated the fighter attacks against zero level rule as well.
So I created this table, which I should have posted a couple of months ago before my online player Ahmet reached 3rd level (but I don't think he's fought anything of 1 hit die since doing so):
I can almost hear the screaming as I violate the inviolable rule - but I don't really care. I do confess to making some ad hoc decisions about the above table, based on experience. I have limited the number of attacks to 10; in my combat system, this is an attack every 1.2 seconds and I am comfortable saying that pushes the boundary of believability.
It's even worse than that, though. My rules are that multiple attacks for fighters gained from levels are still done in the "2 movement point" requirement time frame. Thus, if it takes a 1st level fighter 2 points of movement to attack a 1 hit die orc, then a 3rd level fighter attacks that orc twice in the same time period. This means that a fighter can still move forward and attack - even needing less movement than before, if desired. As such, those 10 attacks would occur at 0.48 seconds per attack. It just doesn't come any faster.
Another ad hoc limitation is the 7+ hit die ceiling; since the change from 6th level to 7th level is all-important to an advancing fighter (1 attack per round to 3 attacks every 2 rounds), this seems a reasonable stop for the table. After all, it was an ad hoc rule in the first place that limited multiple attacks for fighters to zero level - I'm just picking the limit that suits me.
If you are a DM designing your world, you can always design your own table. The important thing here is the possibility of increasing fighter attacks against lower level/hit die creatures. It works in the game, and it is a marvelous counterbalance for fighters vs. mages (and their mooks) at higher levels.