I just discovered this today but there is quite a bit of XP available to get from completing the optional collections in Spotlight. You get 1000 for the Topps Now and 2500 for the Spotlight cards each week. Just putting it out there in case anyone else wasn’t aware. I boosted around 25k XP just by completing those this morning.
This is why I love this forum. I completely missed this. Thanks for the information OP.