They’re fixing the exploit The Spiffing Brit and others use.
If you can load it on a linux vm, you can use fsck -v /dev/mmc0
to try to repair it.
Hit & Run actually did get a fan remake in Unity.
https://www.youtube.com/playlist?list=PL3gCaTLUSAUuk6mTBjNc1dwjBf4NiFcEf
I think the popular thing now is to mod your mouse so it clicks on the enemy player’s head.