Btw, we can draw an interesting scheme of Tejas evolution. Interesting, as most such changes nowadays develop purely on conceptual stage. Here, instead it's a Warthunder progression line.
Tejas 1 IOC: 6+1(pod) suspension points; Assuming 2 FTs and lack of initial BVR integration(Derby) - fail; plane can do either air policing or light strike only. (2 useful stations)
Now being updated to FOC software, which lets them BVR, but lack of the central station de facto keeps them at around Bison level.
Tejas 1 FOC: 7+1 suspension points. Got a central drop tank, as such - now there's no conflict between stores for interceptor/defca/light strike missions*.
Furthermore, to get around the difficulty of combining wing tanks with any sufficient number of BVR weapons - they went with the integration of ASRAAM (longest range light WVRAAM), which is just barely shorter ranged when compared to i-Derby.
*at least, in theory BVRAAM were never shown on inner stations; only bombs and tanks were. As such, in practice, plane still has 2 useful stations(3-4 in light strike). ASRAAM adds minimum/conditional self escort.
Tejas 1a: 7+1 suspension points. Key changes - Astra/ELTA 2052 integration, finally allowing competitive BVR.
Furthermore, a twin ASRAAM pylon was introduced: allows for a 2+2 weapons load while carrying around a jammer. Of course, with a corresponding heavy drag penalty, but it's a light fighter - something has to give way, as for now EW pod is clearly not possible on the auxiliary pod station.
Same stations, but now it's a fully capable GCI interceptor, and light strike / self escort grows substantially.
Tejas 2: big QOL changes, using more powerful engine and a larger wing: 11 suspension points; outer underwing points reinforced for BVRAAM; twin BVRAAM pylon introduced for midwing station. Finally, shoulder points are now full bomb pylons, rather than TP only.
Jammer also moved fully inside, EU style. Finally, larger drop tanks (1700/1300) allow much more freedom of replacing one of wing stations with heavy single load(such as Brahmos-MA.
All of that adds very little to intercept profiles, but it's a massive boost to self-escorted strike (nothing light anymore) and air superiority (ofca/defca/lacm intercept) profiles. Tejas 2 is unironically positioned to be a substantially better optimized fighter-bomber(but not fighter) than Gripen E. Though of course, only much later (10 years?)