Server imbalances aren't new for Burning Crusade Classic or WoW WOTLK classic. There have been many stories concerning certain servers in old-fashioned MMORPGs being home to WOTLK Gold over 90 percent Horde players, or the reverse. In most cases, when a server is rumored to be controlled by a specific faction, guilds from the other side and rather than endure it, will opt to switch to a server that has more balanced population. This is especially important in PvP servers where a healthy battle between factions is crucial to the server's popularity.
Aggrend continues to provide the example that shows how trying to "fix" problems for specific group of players related to balance on servers could accidentally harm the experience of many players, rather than benefiting. He imagines an instance where a PvP server is home to a population of 40 percent Alliance and 60 percent Horde. While the majority of players are content, a small portion of Alliance players don't like being outnumbered.
If Blizzard to let players make free character transfers to that realm, the unhappy Alliance players could transfer to a server that has more balance in population buy WOW WOTLK Classic Gold . The downside could be that the server that those players previously resided on would turn into an 85 percentage Horde server which would make the experience more difficult for those who were satisfied with their previous balance.