What, if anything, can I do to recover bitcoin that was stolen from my MtGox acct in June, 2013? I understand the short answer is "nothing", but I ask because I've had trouble explaining this to a coworker which made me realize I don't really get it myself.

What information can I glean from following the stolen bitcoin on a blockchain explorer?  1GvfmXt2CKP8QJfw93LNcnNV6KghD5ohVA 

How useful is the IP address the withdrawal was made from? IP: 75.110.224.12

Do I have any legal recourse when the company in question is bankrupt, in Japan, and the theft occurred almost five years ago?

Thank you.
There is nothing that can be done with just a public address and an IP(as the real IP is most likely behind proxy/vpn/etc...).

Kraken was selected by the MtGox trustee to assist MtGox creditors in investigating missing Bitcoin, filing claims, and distributing remaining assets.
The due date for accepting MtGox creditor claims via online submission has past.
But creditors may still be able to submit claims via the offline claims method.