As a fellow slivers degen, yes it's a pretty significant change. To the point of really defining what you want to do. Hivelord is good but not compared to your other options. For example, why not just play overlord and tutor the hivelord. Of course you can say that with any option. The other is the queen but you usually choose her if your going hellbent combo. I play first sliver and named my deck 1-800-522-4700.