Karzai is an astute politician, he's playing on Pakistan's fear of fighting India on two fronts but at the same time, he refuses to disassociate from Pakistan out rightly. Right now, he's playing to both sides of the house. For greater insight into the nature and depth of the proposed association between India and Afghanistan, it would be insightful to know what the "Wish List" consisted of.......
1962: ANA at the prime of her military power, attacks Pakistan through Bajaur and is beaten back by local tribes and local paramilitary forces. The military didn't even have to flinch. Your assumption that ANA can take on a seasoned fighting force like the PA seems to imply that Indians have grown increasingly complacent of our capabilities. Complacency never favours the complacent.
Well, as in case of Afghanistan, where there is infighting among different tribes, races etc, demonizing pakistan will provide a bigger stronger enemy which will unite the afghans against Pakistan. People across the durand line have similar culture and traditions, they have intermarried among the tribes making that border area to have common links, but lets not forget similar situation of common culture stuff existed (offcourse on a smaller amount) in indo-pak border areas too but was very easily replaced by nationalism. If the Karzai government can play it's card right, and coerce pakistan into fighting back at durrand line, there will be sympathy for afghan forces across the board and then the same version of religion which was used to destroy afghanistan can be used to unite against pakistan.
This might be the golden oppurtunity karzai has been waiting for, have a disciplined officer corp in military wing, so that the top level is not radicalized. Create offensive against pakistani army, start maneuvering afghan taliban to move in the lines of TTP as cannon fodder. Pak army if has to fight afghan taliban at any instance, they will demolish taliban in all out fights.
It could result in better integration of afghans, especially the new generation, effectively dismantling afghan taliban threat, ensuring propping up of existential threat from pakistan which will lead to heavily centralized form of government (similar to pakistan viz-aviz India), Ensuring continued support from India.
It would be indeed interesting to see whats on the wishlist,
Field Guns, anti material rifles, mortars, rescue helicopters, support vehicles, LAV's, field medical equipment, night vision equipment, MRBL's etc. is in the likelihood the list would be interesting.