You want to add some progress meter to the program (ubcd2usb) in the next version so that the user will know that it is working and not frozen.
Just to be clear, when you say "you", you mean the developer, Victor. So that's a suggestion for future UBCD. Maybe some additional verbosity in ubcd2usb is possible as an optional command line parameter.
I may try to add Trinity Rescue Kit to the UBCD.
Under Windows, there are several GUI tools that can "merge" several tools. The final method to put the tools in the USB drive might differ, with pros and cons in each one. My point is, if you don't manage to make it work, there are "user-friendly" alternatives.
I read that there are AVs included in UBCD but I cant find them. I also looked in Parted Magic.
There used to be, in previous versions, more AV tools. The current (UBCD511) are ClamAV and F-prot by default, as PartedMagic modules, and there are batch files to update them (same place where the ubcd2usb folder is).
You can search the forum for additional AV that can be added, but you might need some additional tweaking for the current UBCD511.
As mentioned above, there are Windows GUI tools to make the job easier.
Are there other programs that are planned to be added in the future?
According to my observations, usually the criteria Victor uses are:
How useful the tool is? Is it relatively easy to add to the UBCD menu? Does it work correctly? Does it really bring something additional and still in the main target of UBCD? Resources needed? Will the tool be generally used, or it is only for a very specific group / situation? Is it easy to customize in UBCD in case needed?... Finally, it's Victor's decision.