Treatment For A Leak?

So I had an eroded band just removed. Doctor suggested a bypass will minimize risk of a leak for a revision and that I might have as high as a 30 percent chance of a leak if I get sleeved because of the location of the erosion. Of course there will be things Dr. Aceves will do to minimize risk (including enlarging the sleeve in the vicinity of the erosion) but I am wondering what exactly it means to have a leak and how a leak is fixed....is is a chronic condition, will I die, will they just reopen me and patch me up? Anyone have a leak and survive to tell the tale? For those who have had leaks, would you do the sleeve again, regardless?

All I know is that the bypass seems like a bad choice for me for a lot of different reasons.