User blog comment:ShineKuzu/Mechanic Innovation: Same Batch/Set Bonus(!?)/@comment-35706711-20180601053112

That would be really awesome. Though having the 6 different units of the same batch would be kinda difficult. I personally just had a batch and I'm very thankful for that, but as much as i want to collect another,  the max unit per batch i have is only 3-4, huhu. but i do hope gumi would consider your idea. (the six heroes is really hard to get huhu i just got 2 of them :