I agree that we have to make the most of the stoic philosophers that the turmoil of history have left us. Epictetus and Musonius Rufus, I think, are particularly worth being aware of, as while they are later Stoics, they were professional, dedicated philosophers. Seneca The Younger and Marcus Aurelius are worth being aware of, because they wrote accessible content extolling Stoic ideas. You're right that Seneca quoted from Epicurus, but there was considerable overlap, as well as significant differences, between the two schools. Also, I agree this isn't a particularly breathtaking article, but I'm discovering from conversation elsewhere that Stoicism is a broad church, and different facets interest different people. Some are interested purely in surface impressions, others want to understand the meat and potatoes of the philosophy itself. Hopefully I'll unearth things more of interest, and I absolutely invite others to start adding content on the topic.