There are so many little parts to this show that make it awesome. For ex. I loved when Logan giggled out loud at Roman making fun of their mom's cooking. It was legitimately the first time I remember him ever laughing, and you could see even Roman and Kendall were taken aback by it.
I also love Tom's delivery of his lines... like when Greg said, "But the envelope says receipts" and Tom said, "OOOH, but they AREN'T, IN FACT, RECEIPTS!" The actor is so good at playing the combination of pathetic neediness and mean-spirited bully. It's tough to pull off but he does it perfectly.
In terms of the plot, my theory is