From your point of view so long as it doesn't impact on the traditional status quo expansion is fine, because that expansion would be totally inconsequential to the traditional status quo that you seek to preserve, however as soon as any form of expansion or change is suggested that impacts on that traditional status quo you appose it, i.e. any meaningful expansion or change that an "expansionist" would seek to enact.
So yeah you are a traditionalist, you're just implementing some mental gymnastics to define yourself as both progressive and conservative at the same time when that isn't possible when you get to the meat of any individual issue...