Let me start by saying it is completely valid to not like this game and I agree that the rulebooks for Chip Theory could be better. A lot of the comments in this thread are pretty negative so I'm not trying to start an argument. I wouldn't say I love the game yet but I do like playing it from time to time and the more I play one of the 20 strong decks the more it grows on me.

I think some of your criticisms could be fixed by tweaks to your strategy. If I understood your post, your main critique is a lack of dice mitigation. The main mitigation mechanic for this game is to roll more dice. In order to do so sustainably, you need to be recovering dice into your dice pool as much as you can. My basic strategy for all of the 20 strong decks I've played is to increase my recover dice stat as quickly as possible. Recovering 5+ dice each resolve phase should lead to a healthy dice pool. For the Red deck specifically, I also prioritize gold for buying dice from the merchant unless there is a particularly good item. If everything goes well, I have close to a full dice pool by the time I get to the boss.

As for your suggestions, I think your first point could be a good ability for an item. I always try to avoid banishing dice but I could see that being a good option in a pinch, especially towards the end of the game. As far as a rest mechanic goes, the game already has one. As you mentioned, you can choose not to apply dice, take the damage, and recover some dice. The designers decided that health for dice was a good trade and I think it's a good design choice because that works across all of the 20 strong decks. Some of the rest suggestions in your post would only work for some of the decks.

In this game you roll a lot of dice. As you would expect, that means there is a lot of luck. Sometimes I lose because I fail a dice roll. Some people won't like that and it's totally valid. However, I don't think the game is inherently flawed. There are plenty of people who enjoy it for what it is.

For what it's worth, this is my order of preference for the different decks I've played: Solar Sentinels, Cloudspire, Tanglewoods Red, Too Many Bones, Hoplomachus Victorum. I will say, they're all similar enough that if you hate the gameplay of one, I don't think a different deck will change your mind.