If you look back at WG introducing a new give-away feature, think Christmas event, Black Market, the first instance has consistently been the best: Highest reward to effort ratio.
That is of course deliberate. They know that the first look counts most and we will continue to evaluate something highly that was worth a lot when we first encountered it.
No doubt it will be the same for these battle pass marathons. So, if you are not convinced already, make sure you take part in this, it is likely the best deal WG will give us for a considerable time.