1st choice - DA21/3.2 is a superb all-purpose wide on the APSc bodies. The DA15/4 is really a specialty lens. Second choice is the DA40/2.8.
The HD coatings are a legitimate improvement over the classic SMC, as are the rounded HD blades versus straight blades on the SMC, but a good used SMC at the right price is a good choice.
The DA35/2.8 Macro might work if you think you will step off the trail to shoot ground flora, moss, lichens, mushrooms and insects. The DA70/2.4 is outstanding, but awfully close to the short end of your 80-200.
The DA20-40 is a possible choice, but comparatively large and heavy versus one of the pancakes (21, 40, 70). Frankly, I carry all three pancakes in my KP bag and add a specific lens if I think I will need it. They’re tiny and light.
There really isn’t a bad DA Limited.