During the Blackout experiment Local was disabled in Nullsec, making it much like WH. The nullbears screamed and screamed and screamed until they were sick…and started logging off in large numbers, leading to a bit of a crash in the figures. As always, CCP responded to Null by reinstating local. Go to WH space to get a feel for what Blackout was actually like - I kinda liked it tbh.
These current changes are different in that they appear to be aimed more at nerfing haulers, miners and solo/small groups rather than big alliance blocks in null. The effect, as far as I can tell so far, will be to make nullsec much more impregnable to solo or small groups, thanks to less countermeasures against warp bubbles, and to make Uedama an even better hunting ground for gankers.
Tbh it hasn’t had that much of an effect on me but it certainly will if it discourages Hi sec ppl and newbros from the game. Also I cannot see how it assists CCPs stated aim to encourage more caps to venture into Lo and Null secs.