Its the F-15E that did not have AESA radar (older F-15E). They would most likely add a new F15E (Which would be F-15E RMP or they will skip RMP and add F-15EX first) with AESA radar rather than giving it AESA radar just like they are doing with other jets.
That would be better but i don’t think gaijin will do that, Instead they would add another plane with could possible need around 450k or 500k rp to grind like they have been doing
i think we will see this update a upgraded f-15e or the f-15ex at 14.7. with its strong engine and buffed FM it could fight well against other 14.7br jets. remember what we have learned though the eurofighter is for top tier raw plane performance and powerful radar in WT matters. a upgraded F-15e is the only jet that can go against other 4.5gen aircraft in game while the f-15 GE and f/a-18e just don’t have the power to deal with other 14.7 jets. i have a feeling they are testing what makes a effective top tier jet in WT and that’s why the eurofighter and others keep getting moved up cause they just are that good in game.