xdddddd you need to be good at the game to get into any sort of pro league and no some hubs/divisions you may have to pay to gain access to
it depends, some hubs have subscription on their own
No GPL and ECL have extra costs.
All hubs have theirs own subscripction. Getting Faceit premium lets you play premium queue, premium ladders and leagues. Also you get missions where u can win faceit points and stuff.
Hubs are otherwise, they are made by other people/organisations, only thing is that faceit shares their platform for them.