I think you said it perfectly. New Heartsong is simply more powerful.
I’m sure the old one worked in the exact same way in some regards (obviously not 100% the same, since this now has NSE and more depth in its scripting).
But to answer your question about manifestations -
Think of it this way. You have an ideal partner. They are super smart and super hot and really independent. You also have trauma around love. You are needy and get triggered easily. Let’s say Heartsong immediately goes to work manifesting your ideal partner and you meet them tomorrow. Will they be attracted to you and fall in love with you and want to be with you forever? Probably not, since they are smart and hot and independent, and thusly have high standards which you do not meet with your needy traumatized current state of being.
And so, to actually reach its objectives and goals, the more efficient way for Heartsong to operate is to heal you up to the point where you feel worthy of your ideal partner. Because that’s the real trick. You can be a needy bitchy person and attract your ideal partner IF YOU FEEL WORTHY OF THEM because in that scenario you’ll be relaxed because you feel deserving of their love. The healing is more for us to overcome our own bullshit and feel like we deserve the love of our ideal partner.
Of course it also helps in the long run to KEEP that partner by being healed and a good husband/wife, but when discussing the order in which the sub heals vs manifests, I thought it important to point out what I feel are the reasons behind how the sub works in the short term.