Not sure what they are officially called, but the 3 bubbles we get now above the tokens are alien to me.  A heart, a red zigzag and a blue thing.  I like their use and visualization, but not the icons.  I know roll20 is game neutral, so I am suggesting this.  As a GM, allow me the option to select 1 of (8?)  pre-selected icons for each of the three bubbles in settings. They do not even need to be 8 for each, you can share the same 8.  For example: Heart, Red ZigZag, Blue Thingy, Gray Shield, (sword, star, something to symbolize attack) and so on.  This allows the GM to set them up for his/her needs with "hopefully"  an icon that can relate.  I'd love to see a red heart, gray shield and (?) for my D&D needs. but maybe the blue thing and red line suit a different game.  Who knows what default tokens  can be used.