Hey there...
Yeah I encountered some bugs, when adding a simple back to menu button and I didn't have time to fix them all. It will be there at one point.
The analytics window works also as small buffer, to load in saves and data. Removing it with saving the selection is currently not a good idea.
I like the shop how it is. It is random but there are not enough cards to see a huge difference. No I don't want it be tailored to your current corruption. If you get your perfect deck every run, there is no fun in the game and achieving some good decks.
In the latest patch I tried to improve the visibility for status effects (patreon version currently), it is a work in progress.
If you can name the card that only buffs the ally and needs a target, I'll fix it, it is obviously not intended to be like this.
I don't feel like dropping a card anywhere for an attack is needed or an improvement. It's just laziness and a minus on immersion.
I will look into the shop bug, you are the first reporting this. If I can reproduce it, I'll fix it.
Generally I thank people for constructive criticism or valuable feedback. But because you wrote very demanding and rather aggressive, I have to tell you, that you are free to make your own game, if you are not happy with how the game is. I'm a solo developer with limited time, the game is still in development, I prioritize what I think is the best and rather have a playable game, that is finished at some point instead of the perfect Menu, where the player is "spared" to click 1 button too much when he starts the game ;)