I don't have an answer, just speculation, but GS3 will probably add a new companion with a few conversations. There also might be one of those short conversations at the Alliance base. This is just based on what they did during Onslaught. A number of updates didn't add proper story but still had a new conversation. If it does have a short conversation, it will probably be discussing plans with Shae Vizla about Heta Kol, nothing major.
Proper story won't be until 7.2. There's no way they are getting that out until 2023. Not with 7.1.1 releasing in November/December. I doubt developers will respond. If they say there are no major story updates for the rest of the year, people will end their subscriptions. It's bad for business.
It might be an edge-case BUG situation because of the whole cross-faction 'combat style' combo you have. (since technically, code-wise, a REPUBLIC 'Smuggler/scoundrel' can't wear that specific armor piece )