Actually none of the 4 choices quite match my view. I vote for(posted 9454 days ago)5) Ignorance is no excuse. Any recordings found to play at less than 90% intended speed be removed immediately. Repeat offenders are banned from MARP.
We will have problems with games that don't emulate too well but that is bad luck. If your system can't play a game at the intended speed then find another game or upgrade your machine or wait until the emulation gets better.
I'm tired of this crap where people don't check their settings or recordings before uploading or just don't care - probably the latter. The sooner we implement/enforce these rules the sooner a leading recording can be relied upon to actually be meaningful and worthy of playback.
BTW I like 4) it has the right sentiment, unfortunately it is too lenient to get my vote :-)