That won't be right. The smaller it is, any hotspot on the airframe will be a greater source of return. Adding missiles on Rafale will increase the aircraft's RCS. An aircraft like F-16 may find it difficult to spot the bird, but an aircraft like F-15 will spot it immediately. A weaponized Rafale may reflect lesser than clean F-15, F-16, Mig-29, Su-27 or Su-30, all the aircraft it was designed to be superior to in specific parameters. But the return will be humongous, as in 100s and 1000s of times, compared to 5th gen designs.
The problem is Rafale was designed during the time when radars were not specifically very good. As in what the F-16 can do now, that was the best Su-27 could do at those times. All this talk of tracking a small fighter sized target at hundreds of Km did not exist during those times. So, Rafale with a basic level of stealth was very good. Now radar development has reached a point where Rafale claiming it is stealthy is absurd, to the point of being hilarious.
We simply have to make do with the best we got. We have to hope that the Chinese avionics don't catch up with the West, or the French in particular, for at least 1 - 2 decades before Rafale becomes completely obsolete, because electronics are the Rafale's strongest points. Since we are not planning on fighting the USAF, we can only hope Rafale becomes obsolete at best after 2030, the same time as aircraft like J-20 and J-xx mature and become major threats. By then even our FGFA will be mature and we would have started full scale inductions of AMCA, forcing Rafale to, a safe, second place. If we are fighting USAF, then Rafale is already obsolete.
As for Meteor, why settle for lesser when we are paying top dollars for it.
Mica is an old missile anyway.