I never looked at Words of Power before today, and not doing so was a mistake.
I really wish I had implemented them in my current campaign. I'm giving some strong considerations to implementing them in any new campaigns that I start.
I'm reading Words of Power now, and I see subtle fixes that appear to give casters a little extra utility while killing off a large number of abuses.
Thank you for pointing this out or I probably never would have looked at it.
As an example, the WoP equivalent of Arcane Eye is a level lower and doesn't take forever to cast, but the WoP Teleport is expressly restricted to places that the caster has *visited* before.
And there's no Quicken. It looks like some small buffs can be cast as immediate/swift actions, but that's it.
One man's trash is another's treasure. Unless Paizo suddenly takes interest in the system (unlikely) you don't have to worry about new exploitable words being added that you'll have to sort through. So in a way, Paizo not updating or supporting them has been a good thing.
3PP or homebrew is always an option, too. PC Wizards might be more invested in gaining academic credentials and lab space among arcane guilds if it allowed them to invent new effect words which the players could then run by me for GM approval.
IMO, there's a critical mass of player-facing crunch-support that becomes unfun and unhelpful and feeds into splatbook bloat/treadmill. I like tactical gameplay (I do think the G should stay in RPG), but I always felt like spellcasters were among the worst offenders of the "Magic:-the-Gathering-style builds outweigh in-game decisions and tactics" problem in 3.x.
But in addition to eliminating exploits, it also looks like core components were fixed to avoid scry-and-fry, buffstacking, obsoleting skills, breaking the action economy, and other things that are considered to be caster-caused fundamental problems of 3.x. No direct analogues of Divine Power and Righteous Might even closes the "CoDzilla" issue once and for all.
My current game has to run as it is, as it's on the verge of collapsing under splatbooks and rules anyway and I don't want to disturb the Jenga tower, but I really like some of the suggestions I've seen here - I'm really considering, for any future campaigns, implementing one of Words of Power, giving mythic tiers to martials, E6 (or E8, or E10), or removing generalist full caster classes in favor of 2/3rds casters and specialized full casters.