Hi Lisa,
We thought the actual tour schedule was wonderful!!  We loved going to Longji and Yangshuo, and would not have had that incredible experience if you had not arranged it.  For that, we are very thankful.
 
There are some things that we would suggest:

1). Offer bottled water and travel tissues (toilet paper) to your guests so they don't have to search for them.  (We would've even paid for them since we know that you would get it cheaper than the hotel sells it!)

2). Private tours. We understand that as you get more experience as a Tour Guide, you are offered the Group Tours. We enjoyed having a private tour, but didn't always feel like our tour guides were that forthcoming with informating and struggled some with English. We didn't always know the questions to ask and would've appreciated more information on some sites. But having a private tour was well worth the money since we had a young child and I am expecting another one soon.

3). The hotels were all magnificent. We would've enjoyed spending more time in Yangshuo after our TaiChi lesson before we headed back to Guilin.
 
That's all I can think of for now...oh - we also heard that on some Hutong Tours they offer a meal in someone's home...that would've been neat too. Overall, we had an incredible trip and enjoyed everything we did!  We are so appreciative to you and Billy for putting it all together for us. Thank you so much!