Hamada-sensei IS committing to the bit, he is presenting a new form of magic, in this case... tattoo magic, one of my favorite types.
Funny enough, I have been playing in my mind with the concept of "magic" that uses money as a catalyst, mostly because I remembered an "old" anime called "C - Money of the Soul and Possibility Control".
It is a very good anime, with good battles, a good magic system, and even an above-average story (could have been much more), unfortunately, most of it got thrown out because the anime got canceled early and its true potential wasn't developed, but for those interested I still recommend.
And it is kinda stupid on my part, but I realize that the Tsugumomo "magic system" is much more deep than you first think.
As tools, much of their abilities are set, but when the master is able to interpret their tsugo's abilities they can bring out powers that are much beyond what you can first see, there are even some tsugos that can do that alone.
During Miurahi's fight against "Taunade", he was "compressing" the spiritual form and "concept" of his house pillars into his arm in a split second to boost his attack power.
Even the fact that Kiriha as cloth tsugumomo can be used so effectively against even weapon tsugus is because of this "interpretation" aspect.
The pure, unadulterated THIRSTNESS that this series has makes me always forget that its fight choreography and composition can easily be put in top 15 battle mangas, at the very LEAST, and personally, I would put it at top 10, and very close to 5.