Thanks for your reply to my question.
With your profile, you fall in the category of Indian IT male (the most competitive pool), so you have certain challenges that you have to tackle (but you have enough gun power to shoot as per the details given, so don't worry).
Strengthen each part of your application with strategy and story.
1) Differentiate yourself from other Indian IT pool and exhibit your profile as perfect combination of leadership qualities and technical expertise (believe me a rare combination, and this is your best weapon), i suggest you work out your professional work experience where you must highlight
a) Leadership experience - do not ever miss highlighting how you took initiatives, handled team, resolved differences etc. just mentioning the leadership experience will not communicate how you have contributed as a leader. If you have led members from different countries, highlight the same.
b) International work ex - highlight how you have adapted to the culture around world, the difficulties that you encountered, the problems that you solved etc, talk about what you learned from UK market and US market
c) Diverse industries - if you have worked across different industries, highlight how working across industries helped you to strengthen your analytical skills etc
For each of the above points with respect to your work experience, you must carve out your individual stories. you do not need to give one additional year for your WE, you are fine with till date work ex, you have gained almost everything that the adcom appreciates.
2) Academic performance - do not worry about the GPA conversions etc because you have stood out to be the top performer from your university, i would suggest that you procure a formal letter from the university (not school) for the same. Every university provides rank certificate as well, so procure rank certificate (why to just write down that you stood out to be top 5 students, prove it so there is no doubt in their mind), i would suggest to take professional recommendations since you have substantial work experience.
3) GMAT Score:
If you think, you are done with it than do not worry, you may justify your gmat score in your optional essay and highlight your strong academic performance.
GMAT 1: 470 (Q48,V11)
GMAT 2: 630(Q48, V28)
GMAT 3: 600(Q48, V24)
GMAT 4: 660(Q48, V34)
Now, the gmat score depends on which school you want to go, with 660 and given your profile you are good fit for oxford, said, IE and IMD, but you must ensure that you apply in the first round itself. LBS and INSEAD will be a stretch, but you may take a chance, if you want to explore Asia - explore HKUST, NUS, NTU.
IE has an internal test as well, you may choose to take their internal test, if you want to know more about the test, please send me a PM. It is a fairly simple test.
4) Extracurricular Activity:
You have sound ECs, again highlight the LEADERSHIP incidences at these ECs, and i am sure you will be good with it.
Believe me each and every involvement is important and adds value to your profile, but you should choose one or two that are the strongest and appeal to adcom. Ideally, the adcom believes what you mention in your app, so they will not ask for proof for ECs, however if you can get some certificates from respective institutions, it will help you. when you present a documentary evidence, the credibility sounds high.
5) Goals
Your goals sound ok , but you may structure it with simplification.
You have decent profile, and you have all chances to make it to good school.
Now comes the Question of coming back to india after your MBA.
1) Its becoming very difficult to get placed in Europian markets and UK markets (not impossible though), so post your education you may settle at Europe or UK post education (depending in the region from where you do your MBA).After doing MBA from NON US schools, it would be a challenge to get a job in US markets.
2) If you want to come back to India, choose only top notch colleges - IE, Oxford, Said etc. , I have seen people coming back to India after passing out from these schools and students get better job profiles and decent salary hikes.
Especially, with the industry you have been into, you can come back to India (though do not expect miracles to happen
), but i am sure MBA degree is not a year or a decade's investment, eventually you will gain from the degree.
So,work on your essays and i am sure you will be great.
I have tried to address most of your queries, but you can come back to me if you have any questions in your mind
Good Luck