Anyone who has the older V2 cart that uses the STILTs (like Vortex's own cart per pictures he posted) you can convert those to a Vortex All-in-1 cart. You don't need a V3 cart. The only added complexity is the STILTs. Here's what you need:
1. PCB adapter to support the F0095H0 (CROM1, CROM2, VROM) - Gerbers:
https://oshpark.com/shared_projects/VFKO0LfW
2. Flex adapter to support the F0095H0 (CROM3) Use flex for easier overlap install (see picture below - there's 2 chips there if you look carefully) and isolate OE1/OE2/OE3/OE4 between CROM1 and CROM3
3. Wire OE1/OE2/OE3/OE4 on CROM3 to the FPGA no different than V3
With this method, you will have no space issues on AES.
Don't bother using the STILT programmer PCBs Vortex published. His Gerbers have a mistake and 1/2 the chip won't program due to write protect being triggered. Program in pogo pin adapter or in V3 adapter.
NOTE: This does not apply to the latest "V2" carts sold right now. Those are V4 carts with PROM being an F0095H0.