#1 is true
#2 is not true. Depends on the dedicated server's distance. Latency is more important than bandwidth. Games don't send very large packets. The reason for the low player counts is more due to the cpu having to process large numbers of packets in a very short time.
#3 not true. Nothing about a matchmaking system precludes mods.
#4 Not true. Host migration occurs.
#5 is true







