First of all, I am speculating about
why the developers are doing things, not objectively advocating for or against any specific change.
Second of all, you're (intentionally?) taking out-of-context a comment about the fact that lossy gap-closers led to them being considered something to ideally avoid using if possible.
Thirdly, I'm pretty sure that I didn't say anything about increasing gap-closers to 30s — you seem to have just inserted that at random.
Fourth, at no point did I say that "increasing Shinten's cost to 50 would be a more mature design".
——————————————————
Instead, the actual statement was:

Originally Posted by
Eorzean_username
As Samurai has evolved over time to have a true "rotation", a very definite "burst window", and a more robust and matured system overall, it may well be that the designers feel that the Job no longer needs so much detail involved in, nor devoted to, its Gauge management in-specific — ie, bringing SAM's Gauge more in-line with most other Jobs.
From that perspective, I honestly wouldn't be surprised if Shinten eventually ends up becoming a 50 Kenki action.
This is a cause-effect statement.
A.
Because Samurai has matured as a design over time, and added significant additional details and breadth to its rotation,
B.
The developers may feel that there is no longer a need to have so much detail or attention focused specifically on its Gauge management,
C.
And therefore they may continue to push Kenki towards functioning like other Job Gauges,
D.
To the point that I wouldn't be surprised if they eventually normalised Shinten to the generic "50 Gauge cost" that most Gauge-spenders use.
I did not advocate for this happening, nor comment on whether I see it as a good or bad idea, nor state that this change, specifically, would be a
cause of a "mature design".
Instead, I identified it as a
possible cascading consequence of developer response and perceptions related to how the Samurai design has evolved and expanded over time.