Dean took one look at Seamus' 'drawing' and had to bite his lip hard to stop from laughing really loud. Thankfully he laughed too and Dean could snort through a laugh, shaking his head. "If you say so. I live to please you, after all!"
He was relatively used to Seamus' mind taking big leaps, but it still surprised him, and often amused him. "I retain just enough History of Magic to know pissing off dwarves at least would be a horrible idea. Actually I just avoid pissing off other beings in general. Tends to be a bad plan," he said and then shrugged. He paused, considering Seamus' statement and gave a half-shrugging nod. "I can't actually argue with that. Although you've got to concede he can do impressive things with his broom!" Not that Dean had seen much of Wood flying since their school days, but that really wasn't the point of the joke.
Dean was digging enthusiastically into another plate when Seamus spoke again and he continued chewing while he weighed his thoughts. "I'm not sure. I mean, a screening process to prevent the arseholes would make it super complicated, but in theory it's kind of a fun idea."