I always tell people that I left not because the doctrine was hinky but because the way they treat people is unethical and lacking in morals. That is true. I was shunned based on a rumor.
All the things they are changing... are smaller parts of a systemic problem. It will take more than the GB allowing things to change systemic problems. So, no. I would not return just because it seems like a different place.
Also, when I left I was diagnosed with Extreme PTSD. 'Extreme' isn't a word that medical/mental professionals easily put together with 'PTSD'. I have PTSD because of the cult and their practices and it goes so much further than a few things that make life uncomfortable. I have deeply unsettling feelings towards blood that aren't what they JWs teach outwardly. I have deeply disturbing and terrifying fears of the afterlife, because a basic doctrine is that there isn't one, and if there was one I wouldn't qualify. I'm not alone in these types of fears and thinking. What you are talking about changing is the outward obvious things, but that would not change the internal subtle things that we pick up on in our amazing brains. Having to live with the subtle ideas that they ingrained in us won't be suddenly removed because they changed their minds about those things.
'Changing their minds' is part of the problem. Whose to say they won't reverse their choices? They do that. They back peddle a LOT. It isn't as noticeable because years go between their choices. Or they made the choice in one country and not in others.
Even if all of those things change... I still wouldn't be able to live freely as a non-straight person. My friend who was treated so horribly when he came out as gay won't be treated any better. 'Changes' do not excuse nor erase the horrible way that they have treated people in the past and I don't believe it will change how they treat people going forward. It would be different but it still wouldn't be right.
JWs aren't Christians. They don't follow Christ. If they did they would be called Christ's Witnesses. I can't be party to a group that is so discombobulated that they don't even know they aren't Christians.
Finally, not long after I left I found a different belief system. It is a belief in multiple Gods. I've never been a Christian. I will never be a pseudo-Christian. My current belief doesn't force me to be someone that I'm not. My current beliefs don't force me to act in ways that go against my ethics, nor even that I simply don't want to engage in.
No. I still would not go back.