Hear me out here....if someone mugs another person and that person has undeniable IC proof that theyre the mugger WHAT IF they could send a hit on them anytime after the mug as long as they have undoubtable IC evidence (video of them in the act of mugging their faction members / video of the person bragging of the mugging etc) mugging overall has very little repercussions after the 15 minutes and if there was a long term risk, there would be more natural mugs with actual sense around it not just bragging in advert/ic to the factions face about doing the act because of the fact nothing can happen after the 15 minute point which just makes 0 sense in RP aspects
just a brainstorm and even if this was in place itd be very rare to truly get ic proof that theyre the culprit UNLESS they act completely reckless (which is usually how it goes today) this change would just make people actually not act retarded after the fact and actually have more strategic values of masks, staying low key instead of shit talking/bragging to the people they mugged, working with people and not just going around mugging every person in sight etc
this is would also create a more natural escalation / drama around factions