Really fun tactics game! Quite reminscent of TFT. Though, my main about this gripe is that compositions can feel kind of RNG dependent. If your luck is bad enough, you can just be stuck with bad units without any synergy. I'd probably suggest some reroll mechanic of sorts like 1 or 2 free rerolls per day or something. A way to see percentage chances for each rarity from a given pull would be really helpful too (e.g. 5% epic, 25% rare, 70% common, or whatever the actual percentages are).
The end of day bonuses are also interesting, but I feel as though the class specific choices affect too little units to be useful on most parties. Perhaps a buff to those bonuses or even a way to bestow classes upon different units could make those bonuses a lot more worth considering. A way to reroll those bonuses would also be great in lowering the effect of RNG and increasing player control and probability management on each run.
I also find the sacrifices quite expensive for what they provide, and they're usually all I end up saving for since I don't feel like I'll get them any other way. I feel like making them a bit more accessible could add a more interesting opportunity cost early on since I think their sacrifice already adds enough consequences to compensate and it lets you consider other options for gold as well.
Health not replenishing after each battle is an interesting choice as well, but I feel like there aren't much opportunities to heal outside of just hoping to get lucky with a pool encounter, which makes healer units an absolute necessity on every run. Maybe you could pay a certain amount of gold after a round to heal your party or just simply buy healing items at shops. Aside from increasing player control, I feel like it would add slightly more variety to team composition and provides a bit more opportunity cost with gold if you're not sure if saving money is worth its risk or not.
Overall though, I find the game to be an aboslute blast. It's incredibly fun and addicting and is heading straight to my wishlist. I look forward to watching this game evolve and can't wait to see it in full! Best of luck you guys :)