They can remove Rescue when:
1. The entire playerbase is familiar with every single mechanic, and is no longer human thus incapable of ever making mistakes.
2. People don't ignore mechanics/stand in the fire deliberately.
2. Self-absorbed DPS stop standing outside of AoE healing range.
Until then, I'll continue to spare party members from an untimely death. Thanks. If anything, they should fix the delay on the spell, not remove it entirely.