As stated in another topic, I spent 45K gold and around 1 million silver, and the results were good:
10 Event squads and 23 Premium squads.
I probably won’t use most of them, but it’s always nice to have more options available. Now I am down to only 3 Event squads missing:
On top, numerous vehicles, soldiers, portraits, tons of boosters, some insignia, decals, etc and of course tons of useless callsigns.