Thanks both Jack & Allin!
# 2: now I know why it didn’t work (where I live gretl can’t access the website without a VPN) and have corrected it.

#3 & 6: I can live with this. It all has to do with long names. A partial solution is perhaps to add a note field in model icon so that the user can provide a more descriptive information about each model. This will be helpful for someone like me who has a poor memory of the models that I have created and for what purpose, etc. However, this is not a high priority item, just a thought.

#5: The sorting issue is only true in the famous mroz dataset that is used by both Wooldridge’s “Introductory Econometrics A Modern Approach" textbook and HIll-Grifit-Lim’s “Principles of Econometrics" textbook. 
However, I’ve just confirmed, only the one “mroz.gdt" downloaded from Wooldridge’s datalink https://sourceforge.net/projects/gretl/files/datafiles/wooldridge.tar.gz/download seems to have this problem, sorting by wage or lwage have the same results. The one downloaded from POE’s don’t.

#7: I can live with this also. I’ll just have to piece multiple models manually.

I will try to accumulate more work for you later. :)
Thanks again for this great project!

Fred