For what it's worth, I've been giving Cloudflare WARP a try, at the suggestion of the r/FFXIV subreddit.
Since it's free, I figured, why not? (It's available at https://1.1.1.1 for those wondering)

I ran some traceroute and ping commands and here's what I got with WARP turned on, starting again at the Dallas NTT nodes:


4 31 ms 31 ms 37 ms ae-21.a01.dllstx14.us.bb.gin.ntt.net [140.174.28.245]
5 * * * Request timed out.
6 62 ms 63 ms 66 ms ae-2.r24.lsanca07.us.bb.gin.ntt.net [129.250.7.69]
7 72 ms 72 ms 72 ms ae-5.a01.scrmca03.us.bb.gin.ntt.net [129.250.2.7]
8 68 ms 69 ms 69 ms ae-1.a00.scrmca03.us.bb.gin.ntt.net [129.250.4.76]
9 70 ms 68 ms 69 ms xe-0-0-5-0.a00.scrmca03.us.ce.gin.ntt.net [128.241.2.18]
10 69 ms * * 204.2.29.241
11 71 ms 72 ms 72 ms 204.2.29.122

Pinging 204.2.29.122 with 32 bytes of data:
Reply from 204.2.29.122: bytes=32 time=71ms TTL=53
Reply from 204.2.29.122: bytes=32 time=72ms TTL=53
Reply from 204.2.29.122: bytes=32 time=71ms TTL=53
Reply from 204.2.29.122: bytes=32 time=72ms TTL=53

Ping statistics for 204.2.29.122:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 71ms, Maximum = 72ms, Average = 71ms

While it's not the 50-65 ms I would get normally, issues aside, I think we've got a potential free workaround on our hands.
Of course, your mileage may vary, depending on where you live and where Cloudflare approximates your location.