I think I fucked up by representing a faction straight away. Just hit level 2 with New Monarchy but been reading it's better to level up vanguard first. Oh well, too late now.
What's the disadvantage? If there is one.
You cant spend Vanguard marks until you level up vanguard rank... so you could hit the 200 mark cap if you dont level it up. I ended up using 30 marks already to buy a cloak I didn't even want since I had to spend it on something. It was either that or hit the cap and waste any others I earned.