LOL, Jaguar is not a point defense fighter, its a tactical deep strike fighter
FYI- CAS depended on two things, endurance and high accuracy of weapons, LCA lacks both now, but currently testing hammer. LCA good in air support for ground troops but not CAS
FYI - Mig21 also not a CAS aircraft, IAF brought Mig23 for that role, in future mki/mk2 provide CAS
FYI - LCA FOC also having refueling probe, means IOC also get that feature
Aircrafts which is capable of replacing Jaguar- M2k, LCAmk2 and Rafale, Since IAF only having m2k and rafale in low nos, LCAmk2 is the only major solution till AMCA arrive and AH64, Mi17, LCH, armed drone provide CAS. Both M2k and rafale can penetrate paf airspace for strike and air dominance role simultaneously, thanks to their range, endurance, superior air to air capability and PGMs, TACM etc true multi/omni role capability, Rafale having additional advantage thanks to VLO, Spectra EW, meteor.
https://twitter.com/hashtag/TejasMk1?ref_src=twsrc%5Etfw%7Ctwcamp%5Etweetembed%7Ctwterm%5E1684932936871927809%7Ctwgr%5E%7Ctwcon%5Es2_&ref_url=&src=hashtag_click
super-sonic at all altitudes is the major plus point and
M1.5 is the minus point, a major reason why IAF asked for new powerful engines for mk1, and it become mk2. mk1+F414= mk2 and mk2 not equal to mk2 mwf.
IF mig21 can cross border, then LCA also capable of crossing indo-pak border with out any issue, attack enemy planes and strike enemy targets inside pak territory
combat range - Radius of action, combat radius, or combat range in military terms, refers to the maximum distance a ship, aircraft, or vehicle can travel away from its base along a given course with
normal load and return without refueling, allowing for
all safety and operating factors.
Combat range of mk1a is better than ioc version and range decrease with load, less range for strike/cas mission compared to CAP or interception, a reason why Russia having su35, su30 and su34. USAF considering B52 heavy bomber for CAS
Bottom line - LCA is a good replacement for Mig21 but for Jaguar, AMCA is the best option and rafale is another alternative