There is also the oft forgotten Treasure Hunt mini game that can provide much needed souls (and other resources) early on in the game.
OP’s assessment of a new player’s experience is pretty much on point. There’s just so much to learn and (want) to do, that a new player can easily become overwhelmed.
But, with a more deliberate approach, just maybe the experience could be different?
My advice to any new player is to take some time working on bolstering one’s account before embarking on much of what Gems of War has to offer.
Also, the Treasure Hunt mini game (even in its current state) can be your friend early on. Trust.