I understand that, all I was really hoping for was a bit more variety among the headlining guests rather than mostly Dr Who, Sam Neill was good though.
On another more positive note, additions to my guest suggestions:
Teenage Mutant Turtles Original series voice actors, e.g. Townsend Coleman
Hulk Hogan (he's a regular at US cons)
The Cast of Arrow
Mr T
Vince McMahon
The Rock
Michael Bay (not sure if he does Comic Cons)