Sure I am dreaming big here, and this is probably some kind of natural phenomena we have never observed before, but why a sphere and not a swarm? OK so if 22% is only covered, this thing looks to be moving, and their Sun is a lot larger than ours, than maybe it is just a Dyson swarm. I mean how much energy do you really need?
Regardless, I feel that cool observations like these merit better observation. I know that this thing is ridiculously far away, but why aren't we building tech to launch small probes (maybe the size of baseballs) and communication satellites around other planets - I mean eventually we will need something like Internet access on Mars, Saturn, etc.., so can we have a network of tech to help us gather better data, and gather it quicker? We could be launching small probes at very high speeds, even if its just to the edge of our solar system, and probably be learning some very cool things.
I just feel that even if this is some kind of alien megastructure, we won't be able to gather enough proof to make anyone happy. Sure its far away, but imagine that maybe it was only 5 or 10 light years away. Would we really be able to gather the data we need to make an informed decision?