Last attempt to clarify:
An SP is a Starting Pitcher who not only begins a game, but is expected to go multiple innings, the fact that he might get bombed or injured, notwithstanding.
An RP is a relief pitcher who only normally throws an inning or two at any point of the game, including the first inning. Beginning a game does not make him an SP, just an aberration.
A P is a Pitcher with no clear role or a rookie without a role yet. He may be a pitcher up from the minors who hasn't been given a role yet. He may be a Long Relief pitcher who has been pressed into a starting role. Any of these, if rostered in our league as an RP must be moved to P from RP the first time they are clearly used as an SP.
Yes, we're rationalizing and trying to cope with the changing game of baseball and adjusting our rules accordingly. If you don't agree, we respect that, but that doesn't mean we will stop trying to keep things fair.