I feel like this proposal misses the point of a "starter pack". I think the "starter pack" concept was intended to help jumpstart a new player's journey with one, simple click (similar to "starter decks" in other card games).
If the intention is to provide low-cost micro-transaction options to a new player, then that's already provided via the peer-to-peer marketplace where they can buy these cards individually.
Now, if the proposal was to give new players an option to choose a specific Element when making the starter pack purchase...now that's something worth considering. 25 cards all of the same Element for just a few bucks? That sounds like an opportunity to maybe even combine 1-2 cards for their first few ranked battles. THAT would be more in line with the intended purpose of these packs.