Personally I don't care whether you put yourself in large senior, small senior, small coed, or volleyball. Do as you please. I am nobody to tell you that you shouldn't go into a division, I just don't quite understand the rationale behind taking a senior restricted team to Worlds in that division just because you're guaranteed finals. I still fail to understand why Cheer Tyme Love didn't go medium? I get that maybe you go for the experience and the challenge of large senior but honestly I think it was dumb of their coaches to keep them large when that team had a legitimate shot at a globe in medium.
Idk.. Personally I fail to ever understand the point of going to Worlds just for the experience. If your goal is making it to semi-finals, great. If your goal is finals. Great. If your goal is podium. Great. But if your goal is to go to Worlds and have fun? Personally, I think you're better off saving the money. And I know you can say "maybe some peoples' goals are to go to Worlds," and I fully understand. I've been in the position where my goal was to just compete at Worlds, but after competing at Worlds, I can honestly say I wouldn't ever plan to go compete there again if there was no end goal. But it's not my decision what people do with their teams. If I were a coach, I'd have a hard time convincing myself to take a team with no shot at even semi-finals to Worlds, but that's just me.