Su 30 MkI is a heavy fighter and IAF uses Su 30 MKI things which rafale can not do like flying from eastern frontier to western to simulate 2 front war and as a result requires more maintenance.Upgraded Mirage 2000,Jaguar and Mig 29 are more then ok to reduce the load on Su 30 MKI .Problem with Rafale is cost plus no ToT. Had it been Mig 35 or F 18 Hornet ,the planes would in service now.What about joining the Korean Fighter X program ,will it not be a better choice as we get full technology plus it our own plane ,no condition attached .After tens years when time comes to replace Mirage and Mig 29 we can built those planes.As for T 90 ,Army went for it as it can be used in Mountains ,Jungles and is easier to maintain and is cheaper .It is a more versatile with more mobility and better weapons options .
As for Su 30 MKI flying time for 240 hr a year.In early 2013 the French Air Force adopted radical new training methods to deal with such cuts. Rather than cut the flying time of all pilots by 17 percent (from 180 hours a year to 150), half the pilots would remain at 180 hours while the other half would be reduced to 40 hours in combat aircraft (like the Rafale) and another 140 hours in a high-end jet trainer aircraft (that are much cheaper to operate than the Rafale, or similar aircraft). If there were a major war and the second line pilots were needed they would undergo 60-90 days of intense training in the Rafale, amounting to over a hundred hours of flight time, the French air force leaders believe would make them roughly equal to the first line pilots in terms of capability.
https://www.strategypage.com/dls/articles/Fighter-Pilots-Doomed-By-Poverty-1-16-2014.asp
Even the Russian are coming back to 200+hr for pilot after failure of similar as it makes better pilots but downside is more maintenance and less availability,please make a choice a better pilot or more availability of jet . Does any one has cost of flying of rafale and Su 30 MKI ?