Then I would say installing virii should give negative standing. I would set the standing gain/loss to be equal to the AP costs.
That would make the use of one of the SGP tactics given out during R1 a bit more interesting to use. Since disinfecting costs half of what infecting does.
I agree wholeheartedly (and feel stupid for not remembering to include this in the original suggestion... dangit
)
So installing a virii would give a negative rep hit equal to twice what disinfecting would give (which is easy to do since disinfect missions give give rep based on the payout of the mission, which is based on the virii type and size, etc)