This can happen but only under certain circumstances that are spelled out in the contracts.
But, that situation would apply to all points at the resort and not just resale because that resort would no longer be part of BVTC.
But, they could certainly decide to increase a home resort period for popular resorts which means you can’t trade into them as a non owner as soon…
Sounds to me like you feel AKV meets your needs and I certainly wouldn’t buy something else just because on paper it might be a slightly better financial deal.
		
		
	 
As someone who has about 300 AVK points, maybe this helps...
Biggest downsides
- Transportation, bus only.  
- Jambo pool is nearly always packed...and sorta small, though there are things I like about it (more below)
- Furnishings in the rooms are not as nice s some other DVCs, particularly VGF and BLT.  Also, room finishings, mud work, tiles, etc. don't feel as upper end as they do in other DVCs.
- Parking at Jambo can be extremely hot summer
- Feels very disconnected from any other Disney area.  Most DVCs (though not all) give you the ability to walk to nearby area of interest.  Again, for me personally, this is more of an issue for a longer stay.  If you're just going to the parks at 8am and coming back at night, no big issue at all.
An Upside that is also a Downside
- The food, overall, is fabulous.  But if you're staying there for 5+ nights, it's a lot of meals that lean toward one type of cuisine (African/Indian), unless you want to drive or take a bus out of the resort
Biggest upsides.  
- Lobby areas are lovely on both sides of the resort, but particularly Jambo
- Value rooms are fabulous for their point value
- Only 
DVC club rooms
- The uniqueness of Savanna views
- Covered parking, which is only at Kidani. (Honestly, I prefer Jambo as a resort, mainly because of the access to quick service, the nice lobby, Victoria Falls Lounge, and the more adult-focused pool area, even if the pool area there is small.  I realize Pro-Jambo is an unpopular opinion, so feel free to hit reply to let me know how I've gone wrong)
- If you have kids, the Kidani pool has one of the nicest waterplay areas on property.
- Very few tourists (not staying at AKV) milling around, particularly during the day.  Side note: Poly is my favorite resort, but one of the biggest downsides there (also GF), at least for me, is how many general tourists come there each day to check it out or chill for a few hours.  And I can't complain because back when I was younger, I had many a Mai Tai at the Tiki Terrace, while staying elsewhere..  But I also find it nice to be at a resort where the indoor spaces are relatively empty during the day.