Sorry for being so cynical, but I really think they need to maintain focus on the LCA and PAK-FA. India hasn't managed to come up with a 4th gen fighter, or even an SMG for that matter. DRDO is setting itself up for failure once again by underestimating the complexity of such an endeavor and over estimating its capabilities.
You may be right and might be wrong also. Their is nothing wrong in developing the technologies, even if you fail, your research should continue. ADA and HAL faced many problems during LCA development.
They might not have reached the expectations but they definitely gained alot of experience and knowledge from that project. If they stop now, all that we have gained will be of no use.
I appreciate their step taken to develop mk2 version of LCA. Similar step is being taken in FGFA also. Now we might not be able to design a mk2 version of FGFA any time soon,but we must put all that we have learnt into some project otherwise it is of no use.
It is like going to math class and then never practice the question after the class (well i use to do that but believe me its not good). I think development of lca mk2 and AMCA is a wise decision. You are right we won't be able to produce all these planes at the same time but believe me we are not doing that.
Su30 = all 272 will be inducted latest by 2018 which is when we will start producing FGFA (if there are no delays).
LCA = it will also be finished by 2020-2021. (AMCA production should start).
MMRCA = i am not sure how long it will take but i will say by 2022.
Saras= comes under NAL which has nothing to do with defense sector. They will also be producing RTA-70 but they will not effect HAL or ADA.
AWACS= It is actually manufactured by Embraer with the help of DRDO labs like LRDE, DARE, DLRL, CABS and DEAL which won't have much contribution in above projects except LRDE which is working on AESA for the fighters and this what they are contributing in AWACS also.
MRTA= JV with Russia (Production likely in 2015-16).
Helicopters :
Dhruv (order to be completed by 2015).
LCH (ready by 2013)
LUH (ready by 2014)
IMRH (ready by 2015-16)
I might have missed some project.
Man you might be right as everything is quite close. If managed well, they might be able to pull all these projects. If anyone delays, many projects will be effected. Labs are well managed although their will be some delays but main thing here is production. Everything depends on HALs 4 billion $ expansion plan and its IPO on the stock market.