Not only were Sirius units buffed silently (Seriously bad form from developers, Changing things in game and not reporting it via patch notes), But their drop rate has consistently got worse throughout the years, making hunting anything in sirius quite impossible.
Sirius would still be a great place to hunt and farm, but the drop rate has been nerfed so far into the group that it isn't viable anymore to actually farm there. Drop rate on erebos is far higher, And the cryonite amounts are pretty similar.
I think the developers have shown clearly how little they care about making this game active again, I think its plain and clear to see that they wont put this effort in. Things as little as offering people a reason to make youtube / twitch content (Coupon codes for giveaways for partners) are way out of the question for these developers. They put effort into nothing anymore, As we've clearly seen with previous updates. They've even gone so far to outright lie on forums (Offering some form of apology for the mess up that was the "preformance" updates at the start of the year), Which we still have yet to receive.
For me, i've watched a lot of friends walk away from this game, And the reasoning is always similar. I've tried to get friends into the game and got the same response when they have tried the game, Most of them leaving before they even hit level 80 and start the Sirius 6 month minimum grind. The game is far to grindy, and hunting blueprints in every system takes months. The drop rate is so terrible accross all systems with Sirius being the worst, that farming for bllueprints / cryonite basically forces you to buy blueprint boosters, and even then you don't get anything for your efforts. 12 hours farming Sol mat on moon for 1 blueprint with a 125% tracker is what weve come to, You tell the gms about it and they say "that shouldn't be happening, Submit a ticket and it will get looked into", But we can't trust that anymore we saw what happened last time we trusted a CM.
This game has months left, At a push maybe a year. I don't see it surviving much longer with the developers being so unwilling to put effort into giving people both a reason to come back to the game, and start playing the game.