I made a TDM map, it's a class.
How players get in it? They teleport in a base?
No.
There are a total of 15 spawns on the entire map. Players teleport to them in shift. (1>2>3>4>5) by using shiftEventEnabled. Thus, it's hard to anticipate the next spawn, in the battle-field you need to think fast, this fast thinking can't be done as "Where will the next spawn be?!" so noone can really realize where the player will spawn.
I died a lot of times on my server while the map was on. I didn't got spawnkilled at all. It just happened once that me and a player teleported at the same time at the same spawn (Both teams use the same events) and I killed him, and obviously he called out spawnkilling, but that was my mistake.