Honestly, I would like to see all the regular Osu! mods incorporated in the power-ups.
For Agressive Type:
Forced Flashlight, Forced Hard Rock, Forced Hidden, Forced DoubleTime.




For Friendly Type
Easy Mod, Half-Time, Relax, Auto, and No Fail (Could be name changed to immunity)





Now for the new features, but using what is already in the game:
Name: Difficulty Change
Icon Design: 2 curved arrows going in a circular motion
Type: Neutral or Random
Description: Randomly switches the difficulty of the beatmap. (Since most maps have about 3-4 difficulties) Hard could become easy, Normal or Insane. Its random so it can be helpful or damaging.

Name: Ultra Kiai
Icon Design: A Star with mini stars coming out of it.
Type: Aggressive
Description: Same as Kiai mode, but even crazier on the effects. Like double the usual Kiai. Should be harder on visibility.

Name: Sight Reading
Icon Design: An eyeball with a question mark in the retina.
Type: Aggressive
Description: All hit circles disappear leaving you with only the approach circles to read.

Name: Audio Slicer [Could also be named Broken Record]
Icon Design: Music Note Getting Slashed.
Type: Aggressive
Description: The audio of the track is sliced (example: the music is muted and unmuted in a fast rate making the song harder to follow)

Name: Reversed
Icon Design: A conventional rewind logo
Type: Aggressive
Description: The track is now backwards and MUCH harder to follow lol.

Name: StackMania
Icon Design: A tower of pancakes with syrup on it.
Type: Aggressive
Description: All sliders and Spinners are turned into stacks of Hit circles. (Every tick that the slider or spinner normally would have, become hitcircles)

Name: Elite Combos
Icon Design: Elite Beat Icon
Type: Aggressive with chances of being friendly.
Description: Combos become longer, And now what was going to be 3 different combos of lets say 4 beats per combo, Becomes one big combo that has 12 beats in it, Making it harder to elite Beat that combo. BUT if the opponent manages to elite beat that entire bigger combo, Extra points can be given to that player.

Name: Chameleon
Icon Design: A Little lizard, same color as the boxed background its in.
Type: Aggressive
Description: Beatmaps Background color changes to the exact same color as the current combo being played. When the combo changes, so does the background color, making it a bit harder on the eyes.

Name: Groupy
Icon Design: Pippi Face winking
Type: Aggressive
Description: Forces Pippi on screen for every beat, or every combo hit. Creating a minor distraction during some time.

Name: Offset Destabilizer
Icon Design: Not Sure Yet
Type: Aggressive
Description: Songs offset is nudged randomly, making it much harder to hit circles with 300's.
: Note that these photoshops were made VERY quickly to give a General idea and I can possibly make MUCH better ones if ever needed.