Or taking both of them since they do not fill the same role, even if they overlap a bit. What if you can't find a line of sight within 40-80 cm range for the dakini ? You have to make it walk through the board. It may then be out of your repeater network, or encounter some mines, or some short ranged fighters. Rudras is far better in the 20-40 cm range, plus with it's armor, 2 STR and built in repeater, it is better in short range. And rudras can climb well. Use dakini HMG for long range shooting, then move rudras to clean what remain hidden.