SP drain is stronger than SP gain particularly vs low rarity players. You have the potential to completely lock them out of all their options while also being able to produce SP of your own using other methods. Making Belus SS random is a good idea if you ask me. Obviously if you are doing a SP drain deck you will be wanting to remove their units as well. THe two of those things together would completely transform what high rarity players do to low rarities and it wouldn't be pretty for noobs. No not at all.
I can only use Bringer, BKR Jack, and returns cuz I'm a free player. It's my best shot at winning!