When spawning into a game for the first time it would be helpful for the default location to be your sides Main Base, since this is most likely to have your team and supplies. Other sites, which are almost always chosen are usually incomplete and not as useful.

When respawning it would be more useful to default to Last Chosen, i.e the last place you chose to spawn at.

This is just to save some time messing around in menus.

Note, this is not suggesting these be mandatory choices, just changing the defaults from the current ones.