By no means too late. People rolled new characters on the server even on the day the server closed. There is always plenty to do, and plenty of people leveling. I made alt characters and always had people to dungeon and quest with. Most guilds ran alt runs on off-nights and this is a perfect way to get geared and get your foot in the door for a great guild.
Worst case, just roll a character and play while you wait on the fresh realm. If you play a couple weeks and find its too far for you, wait for the Fresh Realm. Either way, what have you got to lose. Worst case is you have an idea of how to level your character when the Fresh Realm drops.
Best of luck.