I've been wondering, recently, if some of the Chanter-related discontent I've been sensing on these forums might be alleviated by tying phrase lengths to Intellect. By which I mean, first of all, increasing linger durations. This is something that seems to have been intended from launch, based on ability descriptions, but obviously hasn't been implemented thus far.
What if a high Intellect stat reduced phrase durations by the same percentage that it increased their linger durations? The overall uptime of chant buffs, this way, would stay roughly the same as it is now, and of course any Chanter in a situation where the repetition of one particular buff is beneficial would still be able to riff on a given phrase to his heart's content. But for Chanters who like crafting multi-phrase chants to take advantage of their overlapping synergy, a high INT would now make this an even more viable strategy.
Granted, this seems like it might be tricky to code. It also might be too far afield from Obsidian's intentions with the Chanter, as a reliable caster with unlimited but circumstantially restricted resources. But it seems to me that in terms of game balance, it wouldn't be a ludicrous shift. Summons, for instance (which seem universally regarded as the most powerful Chanter Invocations), might enter the fray earlier (if the Chanter in question has a high enough INT), but it's not as if the ability to build up phrases more quickly would mean a battlefield flooded with drakes or ogres; the extant one-per-caster cap on summons has that covered. And the other Chanter invocations, while useful and fun, don't seem maddeningly powerful enough when compared to the abilities of other classes that a somewhat quicker rate of phrase-generation would break anything. Even a Chanter with 18 INT under this hypothetical adjustment would still be getting off a single AoE Paralyze in the time it would take a Cipher to cast any number of similarly crippling CC abilities.
It seems to me that all people want from their Chanters is to be a tad more proactive in the heat of battle. This might be a way to give them that without radically adjusting their unique casting mechanic.