Unsportsmanship tactic

Players who start a game with only themselves in a game are getting a huge advantage. They can get a head start on taking city's and wait for players who are new to the game to join and of course they have little to no chance of winning especially if the game is set for total annihilation.
Iv seen this happen a few times and thing it is unsportsmanship tactic, these people are winning huge Sp's with globule maps and its not fair.

I think there should be two players at least or radioed to how many players the game is set to and of course meaning you cant change how many players can join a game ones it has started?

I don't think this is such a big deal. First, SP you get for fighting neutrals is rather insignificant. Second, players are normally hesitant to join games with 10+ week and just one person.

Anyway, we don't want to restrict the ability to start the game alone - some people just want to practice or do whatever, we don't care. Obviously, it shouldn't be a good way to gain SP - that's why you can't win a solo game, for example.