Hey dude!
A couple of weeks after the Chaos Legion comes out, there will be two ladders to battle in; Modern and Wild. Modern will be Untamed, Dice and Chaos Legion cards, Wild will be everything, including Beta and Alpha. I don't know what's happening with the starter pack... there might be one for wild and one for modern... or there might just be one for modern, in which case you would lose your access to Alric. Given that the Land expansion will provide better bonuses to Alpha and Beta cards, I think (given the information we have currently) that Alric should be a long term hold.
I don't have Mylor (I'm hoping prices drop during the CL release or the next bear market) but I'd argue that he's the best low mana summoner in the game. So good choice!
I know the vouchers seem like a total bummer... but personally I think it helps give new(ish) players a chance. Seeing as there is substantial demand, there is every possibility that whales could buy up all the packs in the first couple of minutes, and then sell them for double, triple, etc on external sites. We see it with shoes and concert tickets all the time. While the vouchers might not help you specifically, I think they are a good move for all the non-whales hoping to pick up some packs.
For your remaining $75, what about the Kelp Initiate? I use it so much playing water. It's such a huge card for me.
RE: $125 More Invested Into Splinterlands Credits To Boost Gameplay - Card Buying Input Welcome