in terms of mixing wobblers together, they tend to not thrive 99% of the time such as spider champagne, spider powerball, hidden gene woma champagne. But some of them come out perfectly normal like hidden gene woma spider, spotnose champagne, and spotnose hidden gene woma. Spotnose spider is iffybecause i've heard varying degress of the viability. Ben renick has made numerous combos of thatpairing and they'veall lived to adulthood with no noticeable problems or differences from regular spiders where as justin kobylka has stated that spider spotnose comes out extremely dingy but can still eat so, spider crosses with spotnose are still in infancy interms of information. (I got this information from asking them directly)
As for animals will really bad wobbles, from my understanding, the amount of spiders that come out with a really bad wobble still thrive, it's just a bit more time consuming during feeding time because you have to check wvery little bit to see if they lost track oftherat ornot. That is also a moot point because i have to that with my non-wobblers anyway. In my opinion a bad wobbler that would have to be euthanized would be something that's dingy beyond repair like NERD's pearls that Kevin would accidently make back in like 2009-era where lethal combos were still being discovered. Those snakes have a wobble that's a 100x more problematic than the spiders.
A little side note: I do not have anything against people who choose not to own spiders but what I have a problem with is people bad mouthing and bashing people who own or breed spiders. (I.e. Reptiblr)