Then what you said is the exact opposite of what the IAF should do. A competitive tender will give them the information they need to go to the next level. In advanced air forces, the air forces have requirements and they ask the scientific community on how best to fulfill the requirements. The scientific community then tell the air forces what can be done and cannot be done. But in India, the scientific community is still too young, so the IAF has to rely on foreign scientific communities for the same. But foreign scientific communities will obviously not tell you everything on their own, they need to be coerced or provoked into telling it, hence the need to put them through a competition with a large prize. The bigger the prize, the better the technologies they bring to it.
You're getting what the sellers want to sell. If they think you're only doing those tenders for intelligence gathering, you're not going to get the things you think you can get.
And in any case, they only give you what their systems are capable of, not how they work or why they chose such or such technology instead of such or such other.
The IAF need 24 new squadrons, not merely 3 more Rafale squadrons as you have noted. And 12-15 of those need to be contracted before 2027, apart from the 6 squadrons of LCA Mk1/A.
With 18 aircraft per squadron, those 12-15 squadrons are 216 to 270 aircraft. Can India sign contracts for over 200 state-of-the-art jet fighters within the next six years? I am very skeptical about it.
First, there's a recession going on. Predictions are that it'll take at least three years for the economy to recover. So that pushes us to 2024. There'll be three years, 2024, 2025 and 2026, to sign a deal twice the size of the defunct MMRCAv1.
Best case scenario, 216 Rafales are bought in 2024. Between Dassault and DRAL, an average production rate of three aircraft per month is possible from 2027 on. Deliveries end in 2033.
Worst case scenario, the Qatari option. India waits until 2026, so to get 216 aircraft by 2033, the order has to be split between different manufacturers. Assuming all the production lines still exist, India buys 36 each of Rafale, Typhoon, Gripen, F-15, F/A-18, F-16 in 2026, deliveries start in 2029 with one aircraft of each type per month on average, your zoo is complete in 2033 too but what a logistical nightmare!