We should at least test the J31 and see if it can be used as a foundation to develop an economical 5th gen platform.
Yep. To be honest though, China is in a better situation to make that judgment than us. China was the one who had developed the J-31v2 demonstrator, we didn't. So, we'd have to follow China's lead/advice on whether transitioning it to the next step is tenable or not. If AVIC moves it further along, we'll probably join in.
I do not think PAF will buy any 5th generation platform from China for the foreseeable future, for a few reasons;
1. Economy cannot sustain purchasing a 5th generation fighter and the ecosystem it requires
2. PAF would not want to push the Indians towards a similar purchase. They have more funds and the indian hawks using their radical media will cry and moan until India at the very least numerically matches our purchase or exceeds it.
3. Diversifying funds into multiple domains can actually make PAF stronger. Instead of investing in a golden egg...PAF can continue to develop jf17, purchase AWACs, improve their air defence capabilities, purchase additional surveillance and attack drones and continue to invest in building core competencies via project AZM...purchase of a 5th generation fighter will cause severe roll back of these projects due to reprioritization.
Lastly, PAF is aware that the J31 or even a variant of the J20 will be available to PAF should they seriously pursue it...so why the rush?
Yep. It's unclear to us whether the PAF will continue with JF-17 development, or totally pivot to the FGFA.
There are many potential outcomes, e.g:
1. CAC and PAC continue improving the JF-17 (e.g., add a new engine, lighten the weight, etc) while PAC/AvRID opt to spend 15-20 years developing the tech for a 5+/6-gen fighter. In those 15-20 years, we add new JF-17 variants.
2. The PAF opts to induct the FC-31s in the 2030s so that it can supplant the Mirages (too old) and older F-16 MLUs (which we can't SLEP due to borked Pak-US ties), and works on its own NGFA tech in parallel for a 5+/6-gen fighter in the 2040s.
3. It closes up the JF-17 after Block-III. Buys a bunch of J-10CEs from China. Joins the Turkish TF-X without too much worry about risks and delays (due to it having the J-10CE).
4. The PAF joins the TF-X, but in the mean time, continues working with CAC on improving the JF-17 via a Block-IV, Block-V, etc, and induct those new variants until the TF-X is ready.
5. Takes a page from HAL and basically re-designs the JF-17 into a larger, lighter, etc aircraft like Tejas Mk2. As far as engineers are concerned, it'd basically be JF-17 in name, but a different fighter. This comes in the 2030s, but the PAF partners with Turkey on the TF-X for a total NGFA solution in the 2040s.