I dont think unlimited card draw is that overpowered personally as having your entire deck in hand where as incredibly powerful and usually game wining, is still limited by resources.

The issue with all of these combo's is at the end of the day will of the west, because so long as there are draw cards (and why wouldnt there be) and so long as there is cards to generate resources (same again why wouldnt there be) unless the cost of these is always PERFECTLY balanced so that you would always be short enough resources to continuously recycle once your deck is empty, there will always be "some way" of generating infinite resources and then doing "something" that breaks the game (empty encounter deck, proc entire scenario, kill everything in the staging area etc etc etc).

The issue is clearly will of the west, and where as the specifics on if and how this should be modified, it seems fairly obvious to me that being able to use this card an unlimited number of times without any restriction whatsoever is what is at the very least facilitating any current, past and future truly game breaking situations.

Making Will of the West remove itself from the game is probably the standard way to fix this in card games, and FFG have gotten better about that now. (See Levy AR Lab Access in Netrunner.)

But is it worth doing? I think that depends on if the combo is reliable enough to pull off in real games and then end them before an optimized, normal deck would have ended them. Especially now, in the era of quests with the Time keyword that punish you for not progressing fast enough. It seems like this is a novelty more than an actual overpowered archetype, but I'm not seeing any actual evidence either way.