I bought into some aspects of MTGA with the hopes the client would improve; being an early adopter in summer 2020.

It is disappointing when developer debt appears to be mounting. That WotC should hire more developers and/or decrease set releases to give the current time more time to work on updates (namely testing updates).

What is a larger slap in the face is how the economy is being eroded. If you spent money (USD) on packs (and by extension using that to also to craft certain cards), then to find your crafted cards has been shifted in rarity in a later set. This leaves a sour taste in my mouth.

Doing some basic research on Scryfall: a player could identify cards that are likely going to be rarity shifted and choose to not craft until the rare, uncommon or common version is made available on the client. As a way to micromanage their economics.

Currently I have identified at least 65 cards that were released at a higher rarity and now have a lower craftable rarity; at least 65 unique card names (28 mythics, 12 rares, and 25 uncommons that have been down shifted at least one more rarities).

This is from checking WOT, MUL, BRR, STA, OTP, and SPG sets. I may check other targeted places to identity additional cards that have been shifted.

A refund policy for players as follows is HIGHLY recommended (to at least refund wild cards) (either refund plan is required to enact):
1) per account, based on the number of copies at these higher rarity to be refunded (this statistic appears to be tracked)
2) give all players a blanket refund (if a mythic is down shifted, give 4 mythics to all users. True of rare, and uncommon rarities as well)