IMO the 'heavyweight' requirement's been settled now with the Z-10ME. The configuration and PAA's change requests all line up with what they saw in the AH-1Z (which was the originally-sought 'heavy' for contested environments, anti-armour ops, etc).
The next tier would likely be the 'lightweight' -- i.e., 4-5-ton -- for high-altitude theatres like Kashmir, FATA, etc, and less-prepared hot-temp areas like Baluchistan. T129 aside, it's worth recalling that the PAA had tested 2 Z-10s and 1 Z-19 (not 3 Z-10s).
The T129 was sought for the high-altitude and hot-temp environments. It was tested for its durability in static scenarios like unprepared air fields with no ground support equipment. I am sure the Z-19 was tested under the same conditions.
So, potentially, I'd keep an eye on this 4-5-ton requirement. We could see a second series of evaluations with potentially an upgraded Z-19 versus TS1400-equipped T129.
Or, if the PAA really wants to push things, co-develop a solution with the Turks (e.g, T629) and get their own LCH/Prachand-type solution to build in large numbers.