Meme virus is currently useless at level 100. Its only point at max level is to be mailed to people who are still levelling up and actually can use them. And once they reach max level, meme virus becomes completely useless to them too.
How about extending its effect to the tech fragments? Those can be farmed way beyond level 100 and meme virus with such effect would be actually useful. "+500% tech fragments drop rate" or something like that and stacking with mission difficulty.