Li Shenron
Legend
I play mostly with beginners and casual players, and I've seen many of them getting pissed off if there's too many things to be chosen before starting the game. WotC understands that, and in fact they are actually proposing more pre-defined suggestions in this UA than those in the original PHB. And the subclass choice is a big deal, asking someone who just went through 12 classes and was maybe already undecided, to now also make a choice between 3-4 narrower concept, can be too much.Why do people think beginning players will struggle with selecting a subclass at 1st level? It's weird to me to think that, since they already do with some classes; or do people not allow a new player to run a cleric, sorcerer, or warlock? New players are fine with 1st level subclasses and you hardly need the 1st 1 or 2 levels to "learn your class". It honestly sounds a little insulting to me.
It is nothing about "learning your class", subclass feature or class feature at 1st level doesn't change the level of complexity, it's about giving some time before narrowing down a concept that you then carry on until the end, a bit like choosing your university specialization after a couple of years of broader studies. Besides, Cleric and Sorcerer and Warlock got their subclass at 1st level ONLY because the story behind their subclasses was that they define their source of spellcasting powers and so they wanted them fixed since the start (for the Cleric the story is a bit more complicated, conceptually a domain could easily be granted later, but the original Cleric subclass during 5e playtest had the DEITY as subclass rather than the domain, that's why it was set at 1st and it remained so).