Nobody can connect the dots but elder Ambani ie Mukesh whos Relience Industries is a pro congress industrialist. So HAL's objections will be listened more eagerly if the GOI is changed. And even HAL knows it
HAL is actually pretty quiet, it's MoD and IAF that insisted on the RFP requirements and oppose changes and that for good reasons. So if Ambani is pro Congress, that didn't got him much in case of MMRCA, which again would prove that politics had no issue in the competition so far.
So they need to be extra good to keep relations or ready to say good bye to india.
You are overestimating the situation, because they would have to act against their own laws on ToT and if that wasn't possible to an Indian counterpart they had set up a reasonable trustworthy relationship, they definitely won't go over board with the BJP. In fact, it is likely that they will have to start up all over again, which actually is sad, the long term prospect of Indo-US relations with H. Clinton likely to become the next President looked pretty good and it needs to be seen how that might work out with BJP and Modi.
You might be suprised on the cost
Nope, I am following the EF development even longer that I did with Rafale and the costs were always an issue and IMO it gets only worse now. UK won't support it that much anymore, like they did in the past, they get F35 and already made a deal with France for the NG fighter development. They won't bother too much about Germany, Italy, or Spain and further fundigs for EF anymore. The only point for them is, to sell off some of the EFs they originally ordered, but even those can't be sold too far below the normal price, especially since we mainly will have a licence production. So don't expect wonders from that side anymore.
What our industrial need right now ???
Even basics, like modern production standards, but radar, engine, avionics or weapon techs are of course the keys. Wrt ToT France always is one of the best choices, that's why we have chosen them often for licence productions or JVs, so on that side the Rafale was sure to be one of the best offers and there are not many alternatives left, especially not from a single source. Israel can offer radar, avionics and weapon techs, which we already get, just like we already get most of what the Russians can offer, the French are the best western source.