My SWTOR raid group called it quits tonight. A bit sad, because we had a good run of about three years or so. I think we were all getting a little burned out. But it also has sunk in that SWTOR has given up on raiding. It has been about 16 months since the last operation was released, and looks very unlikely that any future operations will ever be made.
Back in the first few years of WoW, there was a huge debate between raiders and casuals. Casuals pointed out that raiders were a small minority of the player base, and that the devs spent too many resources on them. Raiders felt that they were the dedicated players, who made guilds and a community, made an MMO an MMO as it were.
WoW, and FFXIV to lesser extent, followed the path of trying to make raiding more accessible to the broader player base. It's perhaps not quite as successful as people would like, but that path has preserved group content.
With the release of the Knights of the Fallen Empire, SWTOR has gone in the opposite direction. All new content has been aimed at the solo player. The main story content does not work well with groups, even duos. The new side content is again mostly aimed at solos or duos.
SWTOR did re-tune a lot of the existing group content for KotFE, but did not create any new group content.
I'm not saying this is the wrong decision. Focusing on single-player content might be the right call for SWTOR. Maybe the casuals were right all along, and the raiders are superfluous. Maybe the number of people who want group content is not enough to justify the cost of creating it.
It is a bit of a pity, as Bioware did make good operations and flashpoints back in the day. I especially liked all the puzzle bosses.