My personal perspective. I feel super bored playing against all archetypes with an ability to get 30+ health. I feel the rules of the game have been broken by introducing this mechanics. It's not far from giving people the ability of resurrecting the god. Like, you are winning, you are seeing the Victory screen and, then, a beautiful animation comes with the words "your opponent's god has resurrected! keep playing, babe, keep playing!"
Moreover, games with endless healing are too long.
The devs can kill this mechanics, for example, by introducing new powerful neutral cards working in the way of Lighteater Serpent does:
But these cards should be strong without this ability too.
Another way: creatures/spells that prevent healing gods (like, Lokian Disciple can make the god sleep).
Or spells that destroy healing spells in hand/deck.
If this is possible, why not making a card "Destroy all relics and turn all healing cards into 1/1 Rat in both hands".
If the devs see the problem, they'll find the way. The problem is that they don't see the problem.