Some things might change in other ways as well. The weight of all that ice has pushed down places like Antarctica and Greenland. Maybe with all that extra weight gone, they will rise back up again?
Yes, and other area’s will sink as a result of that (think of it as a half-inflated footbal: when you push down a part, another part rises and vv.).
Scandinavia is currently still rising as a result of the disappearance of its icecaps at the end of the last glacial. In response to that, the eastern North Sea Basin including the Low Countries, is still sinking.