From trial spawner, to just spawner.

Due to the recent wind charge addition, I have feedback on how hard it is to obtain them currently.  I thought it would be a convenient addition to unlock trial spawners.  What do i mean by this?  Well what i mean is using a trial key on a trial spawner (not a trial vault) would change it from a trial spawner into a normal spawner, this would keep the mob inside.  What this does is simply trade out a key and loot every 30 minutes (not the end all be all price just an example) for just a plain old spawner that keeps the mob.  This would make obtaining the wind charge less grindy.

bonus pro: it gives the trial key a second use, making it seem more valuable in the player's eyes and making it feel intwined with the overall gameplay instead of feeling one-off gimmicky.