Some margins seem nicer than the middle. A middle is an undifferentiated blob. The mainstream's a deep river you could drown in. Margins are more defined, tentative, subtle and geographically interesting.
A margin is the sandy shore beside the sea where the messenger birds drop hints. It's the grassy verge along a highway, a strip of green standing out against the concrete-grey. It's the white space on the printed page surrounding the text where you pencil in your own ideas. It's the vantage point at the theatre from which you scan the whole room. Take advantage then of a good position.
"It's often true that those who sit in the wings can see more than the players," said Nellie McClung.
If you've been "marginalized" then, don't be too quick to give up your space.