We literally can't figure out much more about Windherding without well actually doing it in practice. It would be pretty useful to see what Math actually thinks about it IC, and a lot of the time experimenting is really the only way forward. Unless anyone has any ideas what we could go looking for that'll be applicable to Windhering, barring the obvious Waystones? If we are doing it for enchanting, then we could just do it... as a gift to people that we like, or hell even something that'll serve as a proof of concept for the College. We don't have to make everything we do a direct benefit for us and only us, given that it is technically possible in the event Math dies then the next PC might be able to pick up one of her old enchanted items.
(note I'm more talking about the stance as a whole on it being unworthwhile, rather than on the individual level)
And even if it is an AP sink, isn't that what every unexplored action is to some extent? As they'll always be actions that'll take some time to build up benefit, and a reputation for making such enchantments might do us good in the long run. Given unless Math dies unexpectedly then we can likely assume she'll make it to her 80's and above. Like for example, the person/people that made a ton of rings infused with the fireball spell to ensure their journeyman's protection helped aid a lot of their future colleagues by doing so. Which may have allowed them to cultivate a greater relationship within their Order.