Furthermore, there are other First Age mods - Schlacht um Beleriand [DSuB], for example, though it hasn't been entirely finished.
Then there was Dagor Dagorath, which luckily died, and there's a successor being developed, that hopefully won't steal stuff from other mods.
So, there are people that "go on the 1st era", you just have to find them (DSuB is on the Modding Union, by the way).
Signed,
The Only True Witchking.
PS: Constantly asking people who are clearly working on Third Age (sub-)mods to make a First Age mod probably won't help you get one, it might rather annoy some modders.