Mark Heap
^ Just thought of this one and had to add him! So maybe re-cast Toby Jones as Q? Pretty sure Broadbent can play any role... so we'll have to hang on to him to.
I'm thinking Mark Heap should play his bond very much as he played "Jim" (as in, Jim. Jim from next door) in Fright Night Dinner. Maybe if Wilson the dog can be in it, all the better.