i found this on pinterest, so credit to whoever the original poster is
i firmly believe mycroft is an enabler. an unhappy one no doubt, but he would bend if sherlock insist.
here, it's about the punch.
he's the clever one. he's the british government. a man like him doesn't simply get what he got by being all brainy and no precaution. i refuse to accept that he had no idea what was in the punch; if anything, he had too good an idea of the whole ordeal. but because it was sherlock who initiated the thing, he deliberately drank the punch.
"your loss would break my heart", more like "promise me you would make it back alive". sherlock wanted mycroft out of his scheme. mycroft allowed it, but there was a condition. stay alive. mycroft couldn't say it out loud, yet the indication was clear as day.
mycroft holmes is an enabler. mycroft holmes is also a brother. he wants his baby boy safe, and he also wants to give in to the boy's demands. i don't think people talk about that enough.