Three questions,
Is there any way to see the current keyspace being worked on like some type of command that prints out in intervals the progress like "continue.txt" on bitcrack. I know there is save.work but this is not readable.
and what does the
"B]" stand for at the end of the command line? picture here of the B.

Why in some keyspaces searches are there many dead kangaroos?
Current keyspace is the entire keyspace. The Tames and Wilds start at different random points and hop looking for DPs. So if you are searching from 0:FFFFFFFFFF ; then kangaroos will be spread out all over the range. The progress is group ops or total DPs found. It is readable if you use python script loaded in this thread. But it will not help you determine "progress"; total ops/DPs are your progress.
If you are in a small range (especially if using a GPU), you may get many dead kangaroos because you have many kangaroos hopping around in a small keyspace so many of them will be landing on the same points. Dead kangaroos can also happen if you are searching for a key that does not exist in the keyspace being searched.