I love where you are going with it!!!
However, you are contending with ICRPG 2.5 or better known as ICRPG QuickStart 2.
It rebranded tags (and other concepts), and worked hard to add observable progression.
Assuming you take all of what 2.5 brings. You also mentioned some things I really liked…damage types. I have a lot of thoughts on these, DM me if you want to go down the rabbit hole I realized I am in…why create a settings book, when you can create a work book to create a setting and use the setting book as an example…another topic for another day.
Anyway, nuanced damage types seems solid and easy, however one thing I sensed in your explanation or sensed lacking in it, but in theme…using that third if-then action to empower a team-mate.
Separately, please consider, the DM is playing a different game…keep the Game masters cognitive load as low as possible. After I encountered my rolling to be sub par, and my Boss man dismantled by my Miner (my Wild West version of a Guardian) I realized I needed to attack Stats.
So I gave every bad guy an alternative attack…usually near range, NPC hits on room difficulty, PC saves completely on successful stat roll of defined type.
My favorite was spit or powder requiring Con, Dex, Int, Cha. Depending on the nature of the enemy. If they fail the Target Room…they miss and reveal the nature of the attack.
Oddly the original issue never happened again, I stopped rolling like crud, and my Miner Player stopped rolling like a Goddess!!! But the alternate attacks kept players on their toes!!!
Now, there is a ton of cool directions you can go, ease of player buy-in, and keeping the GMs cognitive load low should be a priority.
I feel having Player Characters sacrifice a move, action, or “if then” to augment other characters in certain ways, furthers teamwork and sense of “ya we did it all together!!!” But you ran your thing and got what you got from it, don’t change anything…just keep in mind the advice. But stick to your vision.
And wait for the advice of those more experienced in what you are doing to advise you of the pitfalls, and their life experience!!!
But then do your thing!!! It sounds Dope and I’m sure I’ll steal more than a little of it.