Not really a "hate"-hate, but I find some of the voice acting is rather uneven. Starting with robtic filtering that is way too strong, so much it warps the character's voice when they speak, having no filtering at all for some lines, like IS-43's system overload warning for example. Some of the lines are way too quiet, such as the Escort Droid's. Other times it's simply the writing, making them speak in a fashion that is way too humanized, or not using the proper words. I've seen too few instances of "organics" or "sentients", but that might just be me.
Speaking of Escort Droid, it seems he can only take you forward to the manufacturing part of the industrial zone, but won't take you back to his initial post in that zone, only to the Archon, Back to Central, or the Enviro Zone's locations. Also, it would be prudent to also add him to the maintenance area of the Industrial Zone, as currently the fastest way to get there is to warp to manufacturing and go back into maintenance from there, as the alternative is to leg it all the way through the long reactor corridor.
A glitch can also occur when multiple copies of I1-02 will spawn in the small diagnostic shed in the industrial zone, and play the same diagnostic cutscene with the droid there, way past the point of the plot when it was supposed to happen.
The doors leading further into the Industrial Zone, and in the Environmental Zone cannot be crossed until their canned animation finishes. It seems the script keeps the invisible wall and the interaction reticle in place until that is done.
The infamous crash when entering the Enviro Zone with party members is still present, so many years after the initial report, and can only be circumvented by going in solo and re-adding the party once there. Some of the droids later on still have their wallhack abilities and can shoot you through the walls, without any way to fight back until the door opens.
Some quests like the Fixing Droids or Deadly Upgrade seem to be unable to be completed, either due to glitches in the script because the player skips a step in the quest log chain, such as not informing the droid in the Central Zone that they found the War Droid with the illegal upgrade installed and simply went on to destroy him and bring back the part, which in theory should complete the quest, but the journal entry is stuck on "inform the droid" entry, or because the item necessary to fix a droid, namely the Central Droid Processor, doesn't spawn at all, apparently because the main plot progressed too far.
That's what I spotted during my latest run through the place, at least.