Finding IC evidence will be really difficult, as they happen randomly to people who are usually alone, pulling out a camera during a mug isnt it and if people are nearby then you cant mug a person. The only thing that really ties someone to a mugging is if they take a specific item from them (typically clothes) that they are known for only wearing and they try sell it and get caught with it with poor excuses for why they have em. But yes i agree.
It may make sense to extend mugging to, instead of 15 minutes cooldown, to something more like maybe hours long or, heck, maybe a day even. But to negate the fact someone can 'be offline for the duration of this timer', what if we impliment that **once someone is mugged and a timer has officially started, the timer only consumes time via playtime (i.e the mugger has to be online for the timer to go down)**
So if it's like 6 hours, they need 6 hours of playtime to avoid the mugging.
But when it comes to being PKd, then perhaps they can only be PKd by someone they mugged only (to negate being PK'd if they were killed by someone else during that time).
This would definitely make mugging more difficult in the long run for muggers as they would have a longer cooldown which they must be online to serve.