Yea, you get the coin, which gives you +1 mana for 1 turn and you can combo it with some pretty interesting stuff, and you get +1 card, but what good is a card if you dont have any mana? On the other hand your enemy ALLWAYS has 1 more mana than you, and whatever minion you place, the enemy has the opportunity to counter, and you are allways left as the underdog, because the guy that goes first allways has 1 more mana than you on his turn. This is also supported by the fact that statistically, players that have the first turn win more.
I would like to have a so called "Preparation turn" which is a shared turn, where both players set up any 1 costers, if they have them in their starting hand of 3 cards, without being able to attack. After this turn ends, a coin is tossed to deremine who gets to play first and who gets to have the coin and an extra card (the coin will no longer count as a spell or a card, but will be a part of the UI)
After that, the guy who starts first starts with 1 mana, and the match continues as usual. I am aware this change will completely ruin the early game meta, but that is what the beta is for, testing stuff.