Timewarp attack 600 second grace period

I didn’t see any reasoning in your OP that led me to think it should me more restrictive than the MTP. I don’t understand @TheBlueMatt’s comment that 7200 reverse would allow slightly more inflation than 600. I prefer @murch’s recommended 2 weeks limit over 2 hours. I meant anything more than a day is good and safe and anything less is risky.