Hello Aternos Team! 
Yasterday I Saw The Roman Post In My Threat And Of Coursly,I Searched About It
Apparently You Accept CurseForge Because He Have a Lot Of Mods In His Website And Can Auto Restore The Data From Itself,But This is a Think That the Mods Website http://www.9minecraft.net/ Can Do Too!
He 300+ Mod Pages,With Versions Specified For Each Mod,Descriptions,ScreenShots,And Unitil The Required Mods For an Mod Works Fine
So,I Think You Can add Mods To Be Used In CurseForge and In 9Minecraft?
It's A Good Deal!
Thank You! 