Fortunately Travis County "gets" mountain biking. So hopefully it won't be that hard of a sell to have mtb trails included in the planning.

It's safe to say that any natural park is going to get hiking trails if it's open to the public. That's a given. We will need to advocate to mtb trails. A connection to Reimers would be AMAZING. I'll post here if I hear anything about public meetings.

You climbed a mountain, technically that counts as mountain biking.

This article only mentions hiking:  https://www.texasmonthly.com/travel/rgk-ranch-new-travis-county-park-nature-conservancy-land-deal/

Non-mountain biking friends (in the 60 to 70 yr old range) who have done extended bike touring in Europe, New Zealand, Japan bought e-bikes this past year.   Their bikes are Specialied S-Works somethings, they swapped out the drop bars for flat bars and added 1.9" tires with a smooth rolling tread.  They set it up so the battery is external and not inside the frame.  This lets them  pack the battery in a carry on when they fly with their bikes.  At day's end,  one can carry the battery inside a hotel room for charging.   We did a partly gravel (caliche!) road ride with them in the  Round Mountain area a few weeks ago, and I picked up one of the bikes -- it's 30ish pounds, if  that -- feather light.   They are in Spain/Portugal right now and reported that the bikes are doing  great on some incredibly steep roads.  They anticipate getting about 60 miles from one charge, depending on terrain.  Side note: Google "e-bike + solar panels".  Lots of interest on the topic of charging e-bikes with solar panels for self-supported bike touring.