Personally I am very happy you covered the military aspects of Tarain 1 & 2 in proper detail.
The famous Rajput Charge in Tarain 1 destroying Ghurid wings and the horse archer flank attacks in Tarain 2.
Tarain 2 was very similar to Roman defeat in Battle of Carrhae where Parthians used light horse archers and heavy cavalry cataphracts alternately.https://en.wikipedia.org/wiki/Battle_of_Carrhae
You are absolutely right in pointing out that Indians were better in melee battle while the Turks & Afghans in maneuver battle. Much later Portuguese and British emphasize this point of avoiding melee and engaging in the distance using cannons and muskets. They advise retreat instead of melee if the enemy comes close.
You covered the difficulties in breeding and maintaining horses in India. My good friend Col. Jhala of Remount & Veterinary Corps Center at Saharanpur will attest to this. The British overcame this with their thoroughbred horses that combined performance with hardiness to Indian subcontinental conditions.
As sweet revenge, horses bred in India and Indian Cavalry men defeated the Turks in WW1 in Islamic Heartlands of Palestine.
Col Jhala headed the RVC Center at Saharanpur that bred thoroughbreds in large numbers until the turn of the century when mechanization and aircraft made horses totally obsolete.