IA, IN and IAF wanted Trishul 10 years back, but the project failed to deliver. IN made an emergency purchase in the form of Barak-1, IA made an emergency purchase in form of SpyDer and IAF backed off in face of under performance of missile. Now another round of procurement is coming up with the much delayed IAF SR-SAM procurement and IA QR-SAM procurement. DRDO itself has chosen VL-MICA as the interceptor for Maitri given MICAs maneuverability (50G at 7 km vs 40G for Astra at sea level which drops further with altitude) which makes it a very good interceptor in short ranges. Going into trials with an under trial interceptor, much less into an open tender competition would had been akin to repeating the mistake of Trishul SAM. Whenever Astra is mature enough, a new variant of Maitri SR-SAM would be launched with Astra, it's inevitable, but for now Maitri will have to do with VL-Mica.