Of these seven episodes (
A Simple Investigation, Profit and Loss, Counterpoint, Lessons, In Theory, Rejoined and
Lifesigns) I'm noticing a theme - the "good" ones tend to involve either a relationship that already has history or one that doesn't really end in "love."
"Good"
Profit and Loss - Quark and Natima have history.
Rejoined - Dax and Kahn have history.
Counterpoint - Janeway and Kashyk don't actually care for each other.
In Theory - Data isn't in love, he's just experimenting.
Bad
Lessons - Picard and Daren fall in love immediately.
Lifesigns - The Doctor and Denara fall in love immediately.
A Simple Investigation is the only one that bucks this trend. Odo and Arrisa have no history yet the episode still somehow manages to rise above it and be good.