Allow Spawners to spawn mobs in daylight

Hello folks,

I have disabled hostile mob spawning unless it is from a spawner, but I cannot figure out how to force it to spawn at any light level. I also disabled hostile mob igniting, so that's not so much of an issue.

(1) Is it practical to create a runnable for each spawner that is placed (very limited number, only place by admins, total about 50 in whole world) and spawn the hostile mobs that way? I am not too concerned about memory or CPU usage, but efficiency is important in the long run.
or
(2) Is it practical to have a main runnable and a main list of spawners (loaded onEnable from config); and at the specified interval, it loops through each spawner and grabs the spawner type and spawns the hostile mobs that way?
or
(3) Is there a way to change how hostile mobs spawn in Minecraft so that they are allowed to spawn in daylight?