Dominator Primal Mastery Issues

[Nemu]

There are 2 issues with Primal Mastery that seem odd.

 

1 - Energy Transfer costs both life and endurance. Shouldn't it cost no endurance, or at least drastically reduced endurance, rather than 19?

 

2 - Explosive blast cost a whopping 28 end. This is the highest end cost targeted AoE across all dominator epics/patrons and it's outrageously high compared to it's counterpart such as dark obliteration which only costs 18 end. This is almost twice the end cost of Energy torrent and the math seems off here.