US SEAD/EW MISSION TOPIC #3

I have broken down three questions concerning the US’s SEAD/EW mission I would like to get your opinion on in three different posts for sanity’s sake, please take a look at all three:)

TOPIC #3.) Why wasn’t the F-15C upgraded with the HTS instead of the block 50/52 after the retirement if the F-4G? Wouldn’t this have provided a more reasonable allocation of capabilities as well as a more effective SEAD platform? It just seems like the Eagle would be a natural HARM shooter, especially with the diminished air threat faced in current conflicts. Example- look at what the IAF is doing with their upgraded Eagles to make them more multirole-usefull.