i think mine are pretty basic but I'm also just a beginner to all of this! my top 4 would be
1) SPH and having it measured and being made fun of my lack of control over it.
2) strapon play- being forced to suck it and then compare mistress strapon on to my own members size leading to me getting pegged(still a virgin to that)
3) Facesitting/ Ass worship
4) Bondage with CBT and spanking/whipping