We revisit this topic regularly.
The breather line, which is the line of timer 13 we use for endurance regen does not have all the drawbacks that come with the Hiatus line of things.
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This is the Hiatus line of endurance regen. You are slowed by 10,000% for 48 seconds, adding endurance, and it caps at 30%
There is also a 6 minute reuse time in which you cannot use it again.
The breather line
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This one caps at 21% (for rank 1) and does not slow you by 10,000% for the 42 second duration of the buff. The reuse time is 1 minute and 30 seconds. Making it available more often.
So to recap, lower cap, faster reuse, I can still do some dmg while it's going.
We intentionally are ignoring the newer line in favor of the older line to promote higher DPS.
The plugins are designed to choose things like this for you, so that you don't have to micromanage them. If you'd like to micro manage the character you would in fact need to use an alternate resource to play the character so that you can customize it to the way you want.
Without evidence that the new line is superior I'm unwilling to make a change to use the newer line.