Yes. Some ideas based on the UDF(s) in your screenshot:
1- Add a Customizer dialog button next to UDF. Click the button and dialog appears with another UDF showing what's already been keyed in. User keys in more info then click OK to close dialog. The new ""extended info"" is either copied back to original UDF or it can stay in the extended UDF . If latter, a UDT is involved to maintain the extended UDF data (a la extended descriptions). Scripts run in between to handle copying of data.
2- Same as above but as a mod. It would have a cleaner, lighter footprint.
3- Add a Customizer dialog button only. Place all your ""extended"" type UDFs in the dialog instead of Additional panel. User keys in data and clicks OK to save. No scripts, no mods but user always has to click the button to see the data in the UDFs.
4- Add new tab / panel. Place all your UDFs. Enough room to see everything, key in everything.