Its highly unlikely anything they add in the december patch is going to dethrone or even match the Rafale either, and the community at large is done playing your stupid games of pretending it will or that you and the french community at large wont start crying the moment the dev server forum section opens about the Rafale being “obsolete” again regardless of the impact of new additions.
If we take the most extreme potential additions barring 5th gen (improvements being relative to current latest variants of the jets in-game, not relative to the Rafale):
F-15EX: better radar, larger missile loads, potentially improved FM
→ Still stuck with the garbage rod that is the AIM-120
→ FM is still inferior
Su-35: better radar, better fm (probably the closest potential competitor unless major missile changes occur that shift the meta)
→ Still gets violated by the Rafale FM-wise
EFT T4: Better radar
→ Still stuck with the garbage rod that is the AIM-120
J-10C: sidegrade radar, better FM (I think?), better missile load (I think?)
→ degraded HOBS capability for the other improvements, potentially making the jet a downgrade to the J-10A in the WT meta
→ Unclear if FM improvements will make it match/outperform the Rafale, but its unlikely
J-16: Better radar, better FM
→ HOBS capabilities are likely still at J-11B level
→ Almost no info for properly modelling the jet (not sure we even have a pic of the cockpit or even know the name of the radar)
→ FM likely still inferior to Rafales
Gripen E: Better radar, better FM, better missile load:
→ Still stuck with the garbage rod that is the AIM-120
→ FM is still inferior
This also skips over the fact that for the US/RU TT’s, it functionally kills the devs ability to add “new” top tier jets beyond 5th gens, making all future gen 4/4.5 jets filler content for lower BR’s. Also means the devs would have to rush the latest variants of jets for multiple nations instead of expanding on game mechanics for top tier jets, which is just bad for the games longevity.
The entirety of air battles present and future revolving solely around the Rafale is just bad for the game. Its vastly more reasonable to nerf the Rafale to the level of the current content (as is historically accurate), and give air battles and the devs some breathing room and balance after a whole year of this insanity.