i think omitting important things is very close to lying.
there are a lot of aspects to a person, and if you conceal too many things, then you are making yourself out to be someone you aren't, even if you never told a lie the whole date, imo.
lets say if a woman is interested in broadway plays a lot, and you don't like them, but get into it just to please her. eventually its going to catch up to you. and you'd be in a relationship bored having to go to a play every other week.
if a woman is a socialist, and you are staunch conservative, and you act as a moderate, you are broadening your base. but eventually, she will have to find out, and if its a problem with her then you wasted all that time, and you also reduced your base of conservatives who would have truly connected with you.
some people love someone who is absolutely hilarious. and if you are a funny person, and are holding back on your humor just to appeal to more people right away, i dont think it will last.
i would think that appealing to more people, by concealing your passions or what some would consider flaws
so i say quality over quantity.
i would not tell a person i have aspergers or i was born with autism on the first date, as they would make assumptions or have misunderstandings about me which are far beyond what i have,
i think if the other person cannot tell that i was born with autism, then consequentially, they don't need to know. in a relationship, yes, but not on the first date.