Interestingly enough some people never seem to lose that feeling of hunger. Nobody will ever know if these patients never lost physical hunger at least temporarily in the first place or if they're confusing "head hunger" with "physical hunger". There is no test that can differentiate between the two.
Acid reflux is the devil. Bile reflux is the devil's big fat mother. I got two revisions because of these issues, both times associated with hiatoplastic because of hiatus hernia.
My second revision was on 26th February and this time eating is more "problematic" so to say. The MGB seems to be more "forgiving" than the long limb RNY in some way. Or maybe I just don't remember several issue I had in the first months after MGB, not sure.
In general dense foods tend to give me stomach ache and sometimes sit in the stomach like a brick and I hate this feeling so I understand not wanting to eat heavy/dense foods.
It's always hard to tell via internet. Regarding the vomiting after dense food it might be that you're eating too fast or too much or don't chew well enough or a combination of this. However, this is something only you can tell. Maybe you could try a denser food, chew the heck out of it, stop after a few bites or set a timer to e. g. 20 min and take your time.
Regarding the reflux you could play around with different foods. I'm sensitive to e. g. dairy, dry red wine and in general very fatty foods, with nuts and nut based foods being an exception. The combination of high protein and fat is the worst regarding my stomach issues. It also can help having a time span of about 2 h between last meal and going to bed.
However, if your reflux is that bad you might consider revision to RNY anyway regardless of weight.