well the LCA mk-1 will be ordered and like prada said i anticipate about 40-70 lca mk-1 being ordered and they will be used for the 4th and last leg of training for IAF pilots before they enter squadron service. The LCA mk-1 is indeed the most ideal platform as a supersonic trainer which will make the transition easier for the pilot. as of now going from sub-sonic to supersonic is a massive jump and IAF wants a fourth phase of training, this will make soon us the only air force to have 4 stages of training for its pilots.
LCA mk-2 will have larger wings, newer inlets, better aerodynamics, my take is the LCA mk-2 will resemble the N-lca's design in its upper half, the N-LCA has better aerodynamics, drooped down nose, levcons etc. They are not shying away from massive re-design hence its hard to say whether the GE or EJ will be chosen. GE's414 has higher thrust and that can be increased to as much as 120KN from its present 98KN, it also has better FOB survivability, is optimized for all weather performance and not to mention being a maritime engine on the SH, its reliability is legendary. EJ2000 is lighter has lower fuel burn but lower thrust as well, though growth versions are possible, they are not funded, GE already has EPE with over 118KN of thrust which is available for F-18IN if we go for it. Now which engine is chosen will depend on the LCA mk-2's max. take off weight. the LCA mk-2 will be lighter than the Gripen NG which on the GE already super cruises over mach 1.2 with stores. This decision will take time and wont happen till a full working model is ready.
LCA has enough funding, the problem is the IAF's changing requirements and threat perceptions, which is why the LCA mk-2 is bound to outperform any known single engine aircraft.
BTW the Gripen NG on any given day is much more multirole than the J-17 and J10B can ever dream to be. It can readily deploy more PGMs and weapons than the EF or Rafale. Its weapons flexibility matches upto the SH, F-16IN. Its has the cheapest life cycle costs, it only might fall short in combat range compared to the others in the MRCA race. With Northrop seeking US govt. permission to offer SABR radars for the Gripen NG and EF tranche 3, Gripen NG should not be underestimated.
http://www.aerospaceweb.org/aircraft/fighter/gripen/gripen_stores.jpg
btw no matter whether pak gets J-10B or J-17, they wont be able to counter the mig-21 bison to begin with, lets not even talk about the MRCA. If the SH is chosen well, we'll have 126+ aircraft with awacs abilities, with just a couple of SHs armed with 12 BVR and 2 WVR A2A missiles each, thats 28 missiles in total, together capable of downing an entire squadron of fighters.
India wont get the SA-21 because we are working on MR-SAM and LR-SAM. for longer range threats we'll get AEGIS SM-3/6 on our ships.
Well the WS-10 and AESA for China well, thank god they haven't been exposed to TVC or AESA before hence they wont be able to actually come up with it till much later. We know that without previous exposure to such technology and inability to reverse engineer makes it almost impossible for Chinese to develop something completely by themselves, so i expect they will be scratching their heads on AESA/TVC till at least well beyond 2016. We already have Con-di nozzels on our Kaveri.
well no exposure to super cruise, AESA, TVC also makes any J-supposed xx a lame duck, even if it does take shape, it will have ample trouble from upgraded MKis with smart skin, AESA and what not. We'll always have an edge over both Pak and China in air dominance.