An interesting way to communicate without chat

One of the things that make league interesting is coordination, we already had some ways to achive this and more of them were added recently (u dirty voicechat) but even with that its still difficult to coordinate a full team ambush, group or baits, the chat it´s the best way when u are solo, since voice chat doesnt work unless u are in a party (thank god for that) but whe still have somenthing, the pings. In the old days only a few amount of pings were available, the blue and yellow if im right, and quite a while ago new ones were added the very usefull MIA, the "where is my team?" help ping , the OMW, the caution and finally danger. all of them are very usefull (And kind of toxic if used right(laughs in troll)) but still, they arent enough to communicate all the possibles "INTENTIOTS" in the game, for example: For TOP, MID and ADC I JUST WANT TO FARM I WANT TO PLAY PLASSIVE I WANNA GO FULL CHEEEEEESE(Draven mains) IM BAITING (based on own´s judgment)
Special for jungler's I WANT THAT BOOTY (I want to gank) IM CONQUEROR NAPOLEON (Im invading their jungle) IM focusing on jungler objectives (getting vision of enemy jungler, securing dragons, getting control of scuttle, cleaning wards etc.) Special for supports: Im only pocking/harassing Im GOING IN Im getting vision control and warding

As i imagine this, one presses a key or maybe presses one key twice fast or something, and a kind or "Aura" surrounds the champion, and is visible for all the team, not the enemy of course. This would be great for many situations in this dinamic and evolving game named league of legends.