I don't know if this has been mentioned before, so I apologize if this is old news.
While looking through the gamedatabundles for modding purposes I came across the table managing power levels.
The table looks like this for single classes :
"SingleClassPowerLevelByCharacterLevel": [
"1",
"1",
"2",
"2",
"3",
"3",
"4",
"4",
"5",
"5",
"6",
"6",
"7",
"7",
"7",
"8",
"8",
"8",
"9",
"9",
"9",
"10",
"10",
"10",
"11",
"11",
"11",
"12",
"12",
"12"
],
This clearly shows that at some time they were considering power levels up to 12 and character levels up to 30. Doesn't mean they are still going to
do that of course. Just thought it was interesting.