What if, an account when turns old (for example more than 365 days old) to slowly loose his abilities. Like to fail when trying to do a crime that needs physical power. When someone grows old, in real life, he is wiser for sure. This ability cant be earned from the character but is actully earned from the player. 

But a mafioso when he turns 60 in real life, he cant be involved in crimes with the same frequency as he did in his 25. Wehn you are young you work more. Whne you forw old you work less, at least with body. Your mind can work the same as well (i hope).

i like this idea, but perhaps make it when the character turns older than the average character age

what if they degrade if not used aftyer a period of time? for example a capped gun must be used daily or weekly to keep it capped instead of capped and never used again

and the lower petties and felonies degrade over time as well if not done regularly seems degradation would be easier to implement into a existing game if it does a "last use" check on each load of the petty/felony/wack/pp