Mercs are still glitched/bugged in many ways. Like one times they tanking everything naked, other times they're dying to fallen fully geared.... and specifically their skill levels jumping up and down for some reasons.
Here's fresh lvl 89 merc
Now fresh lvl 90 merc
And finally died/resurrected SAME lvl 89 merc from first screenshot
PS: And no, it's not "just a visual bug". I've checked mag damage added by Dark power thru d2stats and lvl1 dark power of lvl90 merc is actually lvl1. And lvl27 is actually lvl27
PPS: And for lord raise finally rathma chosen walking speed so that he won't be lost back in 80% of uptime... also remove his carnage since it's do nothing but making using him on some bosses incredibly cancerous (Astrogha - killing totems frequently, kabraxis - making him use his retaliation attacks, any tp-when-take-damage bosses - no comment)