Dear writers: More characters does NOT mean better writing. Relationships do NOT make better writing. You know, you could try NOT making every single show become about every single male character having a relationship with every single female character. Leave that rubbish to the soap operas. We get enough of that drama in real life, thanks. Just like Friends, TBBT went to crap the moment the writers got lazy and thought it would be easier to chase ratings by just giving everybody a romantic partner. If I WANT to watch a show about couples endlessly arguing/making up/getting together/splitting up and finally getting married, I'll choose one with a title that's less about science and more about cheesy romance, thank you very much.
Yours derisively, Sheldon Lee Cooper