I'm a fairly casual player, so perhaps the lack Hatred's current depth is a pain point for long time, higher end players, but returning force management to the spec is not a direction I think to be enjoyable. While the option exists for death field to return force, the talent is a substantial trade off and therefore not a good fix. There is then the problem that thrash is not used rotationally, which it should be in my mind, but nerfing the playstyle by returning a constraint should be avoided. I lack a deep understanding of the mechanics of the spec, and how dramatically saber strike no longer ticking damage will affect performance, but I can say with certainty, that force management itself is not a fun mechanic for hatred, as it is for say corruption. The downtime between short rotational cds being filled with abilities that feel like they do meaningful damage, and/or have meaningful interactions should be a goal, but if saber strike becomes a button which doesn't interact with anything, and is just used as filler to not consume force, the class feels worse to play.
My two cents on the other dps nerfs, is they should be avoided. It is always a terrible feeling to play a nerfed spec off the bat, and changes which also negatively impact gameplay for sake of balance should be absolutely avoided, at all costs. With the current spread, it would be better to buff dramatically underperforming dps which just feels much better, and alleviates concerns of losing viability for players already invested in their characters. While there always has to be a bottom, and a top dps, the spread shouldn't be so great that it may be literally impossible for some dps to clear certain content. Furthermore, from what I understand of high end pve, there are already some insane dps checks, that require strange comps, or specific classes to meet, pushing out numerous classes from the realm of v iability. As such, allowing more specs to be viable can only be a good thing, and nerfing some, only a bad thing.