It is not currently possible for you to swap the data out and use a different elevation source. The SRTM dataset is the only one that is globally available. Much of the logic for retrieving the data, storing it and calculating the profiles is currently fixed to the STRM pixel spacing and providing another resolution would be a significant rework. We have had a few requests for the use of higher resolution data sources but it isn't looking like it is worth the development cost at this point.
The 30m data being somewhat generalized is a good thing as long as you are flying at a decent AGL but as noted in the product's documentation it really can't be trusted around sheer faces.
If you want to test things out in a more controlled manner you could use Tag Pilot and fly under AGL Lock control to see what would happen at various heights in Map Pilot.