Join NA and EUW boards
I think joining the NA and EUW boards would be a good idea since right now they are a little luckluster anyway since not a lot of people who play league of legends even know this exists so not a lot of people show up, I think joining all boards with the exception of the battlegrounds and the teams & clubs sections since there the teams and tournaments are region specific would help out these boards a lot in terms of interaction.
Thank you for reading, I would definitely like to hear your opinion in the comments and please vote! [slayer-pantheon-popcorn] have a great day