Apologies for replying to this a month late. Sumpter beasts are not a capturable creature for the Ombi-Ubiquiti Nets, likely due to being too big. I don't know exactly what you're trying to do, but Sumpter Beasts when spawned with a group of enemies are immediately considered as an enemy and will aggro the player as well so the fight will not end until you also defeat it. As far as I know there is no way to prevent the Sumpter Beast from loading or at least not in that specific quest. Hope this helps clarify anything
On the topic of daily commission runs:
In my personal opinion the huge RNG elements of what commission you get as well as the limitation of it being repeatable only 1 time a day per account world is not very interesting or fun to me. Some commissions can take a few seconds to complete while others could take a few minutes and the unlucky time where you get minute-long commissions and are unable to reset on that same day is not very appealing.
Again this is only my thoughts on the matter and am open to others ideas
Gadgets like the Wind Catcher were never specifically mentioned in the rules since they were made before those came out, but I would imagine they would not be allowed.
This has pretty much been the reason why there has been no implementation of any "boss rush" or combat speedruns so far. Until there is a way to standardize what characters and Constellations people can have, there just isn't a real consistent way to regulate it based off of people's skill. Artifacts could be something looked over but even then that's stretching it a little.
Imo the hard rng of artifacts on top of players just not having certain characters compared to others in a game where you would have to spend hundreds, if not thousands of dollars to guarantee receiving characters it what makes it so unbalanced. Anyone that is f2p or just haven't gotten what are a lot of the meta-defining characters just can't compete to others that got lucky or paid for characters. Especially when it comes to getting multiples of the same 5 star characters.