The threshold for not queuing macros has been reduced from 0.5 GCD to 0.1 (i.e. between 0 and 0.1, macros will not be queued), and if a macro has a queue timer, the timer will expire between 0 and 0.1. This allows for useful NIN macros like:
/micon "Huton"
/abilityself 2261 500
/sleep 400
/abilityself 2263 500
/sleep 400
/abilityself 2259 500
/sleep 400
/abilityself 2260 500
Adjust the sleep timers as needed if you are using Instant Mudra hack.
This requires updating Speeder to the newest version.