I personally prefer BIONICLE, but its kinda sad that Hero Factory is coming to an end now, probably to never return. While Bionicle is unique in its own manner, with the absence of ALL OTHER constraction aside from it from here on out (No Chima Ultrabuild, no Superhero Ultrabuild, No Hero Factory, etc) might impact how useful the pieces we get will be. Building organic creatures will be harder, due to the lack of themes that have them, as well as strictly mechanical beings, since BIONICLE's elements are much more specific to its own biomechanical aesthetic. As a result, we won't be getting many new parts of these types to work with in the CCBS system. Another reason I will be missing it, is the fact that more sets like Invasion From Below from here on out could have been pretty cool! Sure, it probably couldn't have co-existed with bionicle, to avoid it cannibalizing bionicle's sales. But I think with some creativity and freedom with Hero Factory being less story driven then something like BIONICLE, they could have started making sets that could continue the Kaiju VS Mecha theme of Invasion From Below. But, alas, it is gone. Oh well. Now to get all the Bionicle 2015 sets.