Basic cards in grand scheme don’t matter they are like starter armor in rpgs.All cards can’t be competitive ,basic cards need to be competitive enough until you get cards that are competitive.
I think people fall in love with idea that all cards can be useful or competitive.Let’s say CPG made all low used 2 drops into 2/3 or 1/4.Something like Vale Hunter, Jaxi and Maw would be increased in use as 2/3 but they would make other 2 drops probably disappear because of the usefulness of abilities. All cards cant be good.Some cards are gauntlet cards, some cards are competitive cards and some cards are meant for new players.
Entropic decay has a purpose ,give new players an effective removal until the can get something better

(although expensive) 

