From today’s Everquest II Test notes:
The maximum number of guild hall guards you can hire has been increased to 50
I love this change. It has zero effect on my gameplay. It won’t make raids easier for my guild. It won’t give us any type of in-game bonus or increase our faction with the Qeynos Guard. Not. One. Bonus.
I still love this change.
The Kendricke Tracker 
Well, I don’t recall the previous number of guards allowed, but 50 seems a lot better, considering the size of the tier 3 guild halls. With those guards, you can really give the guildhall the fortress feel that seems to be the goal.
The previous number was 20.