Forgive if you have posted this info but read so many sometimes it all becomes a blur. How long have you had gerd? Do you have lpr symptoms? It concerns me when I see people rush to surgery. Yes, many have success but others do not. Do you have barretts? Your les pressure is good, so for me it makes no sense to create a new les with your stomach when theres nothing wrong with yours. If nothing is wrong with your les, I'm not sure surgery would fix something that isn't broken. What is your ppi dose? Once or twice daily?
Now, your question...what else is there to do? A good start is with diet changes. I'm working on getting off ppis all together, at one point in time I was on max ppi x2 daily, h2 blocker, carafate, tums, gavicson and let me tell you I felt like poo! So I believe (unless short term) ppis are no friend of yours, I perfer to control and heal with diet and supplements.
I would never get surgery without alot more testing than what you have had done. I'm going to start the fast track diet sometime in April after I get back from vacation and taper off my ppi.