Lyxen
Great Old One
Minor? You think taking every spell that people would want to use Counterspell on, gets around class abilities designed to help against spells, etc. and making them abilities is minor? It would have been minor if they had only taken out what made sense to be an ability, rather than a spell and made those actions. For example a fire monster hurling fire as an action instead of a fireball spell. Rending several class abilities and Counterspell worthless isn't minor.
Once more, it is extremely minor, because it's only a very few spells of a very few NPCs over one complete and specific campaign that people might never play, for once, and secondary see below, it's totally specific to the way a given DM designs, places and uses his monsters and NPCs anyway. So yes, it's difficult to see more minor than this, it does not even affect the PC themselves, only something that they might not even realise or know about.
This last part is utterly pointless, as the DM can decide never to use actual spellcasters for example, finding them too complex to play. Where would this leave the player ? Circumstantial abilities linked to specific abilities of monsters encountered are way more linked to encountering these monsters and actually being able to apply them than to the theory of their applicability.I get that their intent seems to be good, but the DM shouldn't have to reverse this change in order to make now worthless class abilities worth something again.
Or..............players who want the class abilities vs. spells to actually mean something.