CWA MFs represent the median for MFs across Wyndham in reality. Not too low, not too high, just right in other words.
IMHO, that's really a matter of perspective. CWA does wind up somewhere in the middle of the MF range - on the high middle side of the ones that are reported on TUG, though I couldn't tell you if that's representative of the actual spectrum of MFs throughout the Wyndham resorts. It isn't really the median as that term is used in math and statistics, though it might "represent" the median to those not skilled in the art. As others have said, there are some pros and cons to CWA - it can give a non-VIP owner access to certain Margaritaville resorts at particular times of the year in ARP, for example. I own a small CWA contract that I bought in order to achieve VIPG status before the update to the levels a couple of years ago, recognizing that the MF costs would be higher than I really like.
As for the "just right", that, too, is a matter of perspective. So far I haven't met anyone that has ever expressed the opinion that their MFs on any resort are "too low", though I suppose it is a possibility for someone with a long term ownership perspective who thinks there are potential costs being missed by the HOA that will inevitably result in a special assessment down the road. IMHO, the CWA trust structure with many resorts adequately addresses that by allowing cost spreading.
As an informed consumer, my preference is for the low cost resale ones like Bali Hai and Canterbury that get me about a 40-42% discount on the real cost of stays at the 10-month point (SRP) as compared to someone using CWA - that beats my VIPG discount of 35% with my developer ownership, though I recognize I won't get upgrades through the reservation system (which are spotty for the automatic ones anyway). There haven't been many reservations I've been unable to get at 10 months out, though I am not trying for the 4 BR Presidential Unit Christmas or Thanksgiving reservations at Bonnett Creek, etc.
There can be good reasons for wanting to own CWA - for me it was minimizing the buy in cost to the VIP status I desired in a way that penciled out as covering the higher MFs in the out years. I was also looking at a very small resale CWA contract when they broke apart resale and developer treatment in order to get an extra resale HK in a cost-effective manner. - I wound up getting a slightly larger resale CWS contract in a low cost resort instead in the end.
Bottom line for me is that it's best to research and understand the product when you are considering picking it up and compare the alternatives in order to select the one that will work best for your planned usage.