My reply would be: "Yes, I may consider coming back; but only when and if the Watchtower has given me convincing enough evidence that they're being driven by God and Jesus. Until then, I'm not partaking on it".
If you have become an atheist in the meantime, the Watchtower will never give convincing evidence of being directed by God because you don't believe God exists to start with.
It's best that you keep within your control what "evidence" you're willing to accept as "convincing". The less you disclose about what that "evidence" might be, the less you're opening to become bound to any pre-condition you may set up. For example: "If the organization abandons the absurd 1914 teaching, I might consider going back". The result is that, if they drop it, you'll be called upon your words to go back, despite you may still feel utterly uncomfortable with it. Best policy is to keep it to yourself. For example, claim that such "evidence" is between you and God only and nobody is entitled to be informed of it. God knows and nobody else is entitled to know. Then you keep your cards all to yourself and you stay in control.
If they argue: "You should come anyway and wait on Jehovah to change things if he sees fit, because at least you'll be spiritually protected" You might reply: "I have done that for a considerable time and I didn't see anything happening that can't be explained by imperfect human steering and decision-making, without any godly direction implicated. It was the current status quo that caused me to be spiritually damaged. So, until I see unequivocal evidence of a clear direction by God's spirit, I don't see why I should change my decision to stay away". Or: "Jehovah doesn't need me to go back in order that he enforces any changes, right? So, if and when those changes are made, I'll re-evaluate again my decision to stay away".
Eden