Well if you start to relearn this piece, make sure you get the rhythm right at the beginning. After the G octaves the next measure starts with a quarter note rest and then a quarter note, but your younger self distorts the rhythm and it sounds more like a half note. Maybe this is by design, but it doesn't work and it's not very true to the intent of the piece. Also, a lot of your descending triplets (like the one at the beginning of the section immediately following the D major Grandioso) are distorted, with the 1st eighth of the triplet group almost twice as long as the others... Again, maybe a "style" decision, but it comes cross as either careless or tasteless. Bottom line, this is one of those pieces that you can't bullshit around with... I know it's Liszt, but I think you're on to something when you say that it's one of his greatest works. It's a very serious work and I'd approach it, in a re-learning, with the same seriousness as we afford Beethoven sonatas... Don't let yourself slide on the details and try not to fall into some of those older habits. The bad habits are the biggest traps to avoid.
When you get to the first "crucifixus" section -- the C# minor Pesante -- and then it's F minor counterpart. This needs much more gravity and angst. You sort of flippantly passed through it. It's agony!!
When Liszt writes Recitativo, treat that like opera. I watched your video of Un Sospiro from this year and you definitely have that ability and sound -- I think when you go back to the Sonata that will only add to your interpretation.
I admire your ability to keep your piano chops while having your other life stuff going on (sorry, I googled you... )