I'd like to mention a partition manager that I think "could" be potentially added to UBCD. If it is not added, then at least some user might want to consider it as a customization.
I'm talking about "Partition Logic". Its changelog is located at http://partitionlogic.org.uk/download/changelog.php#0.7
. After several years of inactivity, it was updated in 2011.
The possible downloads include an ISO image and a floppy image.
Since it is based on an OS named "Visopsys" (a GPL one-man project), it may not have support for all types of hardware and filesystems, but it would probably support older IDE HDD using FAT. For other hardware and filesystems, the user should test it (I don't know).
So, since UBCD already includes many tools for old hardware, why this tool might be helpful for the user? Because of the GUI, at least. It is similar to other well-known GUI partitioning tools, but may need less resources (RAM, CPU). Evidently, command line (and simialr UI) tools already included in UBCD would need even less resources, but they are less "user-friendly" too.
Is this tool "essential" for UBCD? Of course not. It would be just another possibility. But it may be of some interest anyway.
Just a thought. I'd like to hear other opinions about it.