Hi, just checked this thread today. I took the liberty to drink on every idea and of course, show something :)
just a brain storm. did in some minutes and didn't trhow away anything. maybe it can inspire others. http://200.171.162.89/ion-brainstorm-1.png pardon if the server is down, it's not 24/7 but i do my best. my own aftertoughts; -didn't liked any of the I(n) because it reads like "in". -I liked the idea of not writting the 3 and just sugesting it on the 3 eletrons; eletrons have diferent sizes because of the perspective ;) -like the aesthetics of the 3 inside the circle, but it gives too much importance for the 3. tried to minimize it using the word over and less contrast on the number. I used a too vivid purple. please, look at the logos with the smooth purple from the website :)
