I too sadly don't think this will happen. Then again, The Who toured Quadrophenia, Yes is touring selections from Tales From Topographic Oceans this year (along with another album I can't remember off the top of my head), and The Rolling Stones did that Sticky Fingers tour last year. None of those are the bands' most popular albums, so a Love You tour wouldn't be *impossible*, but Brian would probably tour albums like Sunflower, Friends, or some solo selections before Love You. As for a release, you never know! The Party set last year was kind of unexpected, at least to me. I don't think it was entirely due to that 50-year copyright thing, either, but more to do with the anniversary and it being a cool type of project to do.
Think about an ultra-limited edition of a late-70s Beach Boys box set with a hand-woven cross-stitched replica of the Love You album cover; 15 Big Ones, Group Therapy, Love You, New Album, Adult Child, MIU, and Merry Christmas From The Beach Boys LPs; CDs of backing tracks and vocals-only tracks; an entire "early mix" alternate 15 Big Ones; the lyrical versions of "We Gotta Groove" and "Short Skirts" and other Brother Rarities tracks; the debut of the apparently awful late-70s mix of "Child of Winter;" and who knows what else! What a treat that would be. Even if it only spanned 15 Big Ones to Love You, I'd be fine with it. They definitely have the material and manpower to do such a thing, and it's really only commercial viability in my mind that would limit such a project.
I disagree that those other albums are more likely...Brian loves Love You and his involvement in it was greater than those others you mentioned. I don't think it will happen though.
I will continue to pray for backing tracks however. It seems more reasonable.