^^ The core problem was McCoy being in the government in the first place after Mags almost killed everybody
Not bringing Grammar back is a great way to ignore TLS
as much as reasonably possible without denying it entirely.
Except we already know that Ellen Page is coming back, so why not have Grammer return?
... 'Cause it's cheaper and easier to kill such a major actor's makeup-intensive character offscreen than to add him to an already-bulging cast?
(And, as one who had only a vague awareness of who Beast was prior to X3
, I wasn't all that impressed by his portrayal. I mean, it was fine, but nothing to write home about for novices like moi.)