The best bonus from pumping str pre update IMO was that it worked on mobs with fortification, but that's become much less of an issue with all the good ways to bypass fort. Precision is now a feat I'd take over PA on any rogue, 25% fort reduction is huge and if I understand correctly the +5% happens after everything else is calculated. SD gets 15% fort bypass and at tier 6 vorpal attacks remove SA immunity for a short time, you can take a tier 4 twist for another 10%, use armour piercing items for +10-15%, mournlode/blasting chime for +20% undead/constructs, and of course opportunist for another +10%. Fort is no longer a hard counter, and if you choose to invest heavily into it can be made pretty trivial.
Rogues are also getting +12d6+3 SA damage, maybe more maybe less as I'm unsure how things will stack once all the bugs get squashed. That pushes them up to around 29d6+28(129.5 avg dmg), more for halflings and more those with rogue past lives. This makes the +5-15 str mod(7-21 dmg) difference much less noticeable, roughly a less than 6% DPS loss on a well geared rogue as long as you hit on a 2.
You can also have a higher sustainable Dex than str now, but since we don't know the new mob AC values and I'm not sure if SA procing on grazes is WAI it's impossible to tell how much of a factor this is.