After much thought on the new Protoss unit, the Oracle, I believe that may be some possible tweaks to the unit to make it much more viable and fun! In the Oracle's current state, the Oracle appears to have very limited use and too much risk to use in multiplayer matches for it to be widely viable, so I believe that the changes suggested below will remedy such issues.
My interesting suggestion would outright change the Oracle completely. This suggestion would make the Oracle become an extremely micro - intensive, interesting support unit that would be able to use in most builds.
Make the Oracle a suicidal "buffing" unit. Such would occur by it having an ability which would cause the Oracle to transform into some sort of "buff mode" in which, once activated, the Oracle cannot move and assumes the appearance of something akin to the merging of two templar. Once such occurs, the Oracle will be able to activate two other spells which will be able to be "pulsed" upon the strike of a hotkey and will drain energy after every pulse. Every strike of a hotkey would result in one pulse of one of the abilities listed below, and every pulse will have the area akin to the area that a pylon produces.
The first of these two spells will create a pulse that restores energy to units, and the second spell will create a pulse that will add additional damage to all non - massive robotic units (sentries and stalkers) for something like 5 seconds. After a time period of something like 15 seconds in being in "buffing mode", the Oracle will self-destruct.
As a result, these new abilities will allow Protoss players to be able to have more use with their sentries and high templar. Additionally, these changes will allow stalkers and sentries, which currently do not have that high DPS, to deal additional damage. Finally, these changes will add to the enjoyment of playing Protoss, as these changes will cause Oracles to become extremely rewarding, micro - intensive units that can fit in with any build. I feel that if such changes were to occur, stargate play would become more common in all of the match ups. I also feel that that this change would be fairly balanced, (after all of the numbers are worked out) as the self destruct component of this suggestion would make it so that the Oracle's new abilities are not too OP. To accompany these changes, I do not feel that a change in the current price of the Oracle is that necessary, but with such being said, I feel that the exact cost of the Oracle after these changes are made can only be accurately determined after testing how effective this new Oracle would be.
Thank you for reading this post and have fun laddering!