Some information for you. Do your research good, perhaps some good knowledgable hindustani members would brief you before you do some blunders over here.
The Snecma M88 engine in the Rafale develops 50 kN (11,250 lbf) of dry thrust and 75 kN (16,900 lbf) with afterburners. Please Kaveri information is wrong.
French Air Force did not find it necessary according to you, Any official report/link by Dassault?
Customers would want a better Engine both F-16/F-18 offered have better engines, so other contenders offered better Engine EJ variant was offered which would also be featured in next tranche of Euro Typhoon.
U.A.E asked for better Engine you know what..france was reluctant plainly as french asked it has to be funded, they were taking U.A.E like idiots that is where U.A.E told them you will listen to us or we will find another contender wallah it shocked Dassault when Typhoon became the official contender for U.A.E next generation Fighter as well.
Based on the information regarding U.A.E needed a better performance engine along with other updates for rafale and french unable to comply or offer leads to believe the is going to be no new engine in development for Rafale, update yourself.
Before Rafale being deployed for A2G role for Libya,
Typhoons were already the first ones to go A2G you need to update yourself, The have number of sorties over Libya in A2G Role.
LIBYA: UK commits Eurofighter Typhoons for ground-attack duties
The omnirole is to delusionalize you people, Typhoons can do it too it was longer deployed to Libya for A2A-A2G Roles.