well specially on this forum i have answered this question many times...and i don't blame you for it because you don't understand the dynamics of defense aand india
india is a big country ...with varied geographical as well as purpose requirement of different equipments.
people ask if we have indigenous dhanush and atags , then why are we buying m777
or if we have our own dhruv and lch , why are we buying kamov or apache
or if we have our tata transportation trucks then why we buy tatra trucks as well
similarly why tejas
because every equipment has its different requirement , could be defense or strategic , but it has
and believe me , we are indian banias , we take use of every penny, not just spending money uselessly
tejas is meant to replace migs not just to display, so you can not equate them to jaguars or su 30mki or rafale ,
if you have tejas , then why upgrading jaguars....its such a senseless question and anyone who know even little bit about aircrafts would have understood
and it is our first indigenous experimented and developed aircraft, built from scratch , we are not just assembling it like jf-17-no doubt its much more experienced than tejas
1) tejas would take some time to get operationally experimented on , getting improved as well as getting the numbers, and we need to maintain a certain strength because the production of tejas is not equivalent to the depleting fleet
2)tejas is specifically replacing mig 21 and 27, not any other aircraft and other thing is it is designed specifically for pak
3)jaguars are our nuclear platforms like rafales , thats why they are so important
its just not that tejas can't cut it , thats why jaguars....
thats senseless
may be i can ask why you upgrading f-16 , because jf17 cant cut it or what...
these are senseless questions