If you want to test out other applications or even a different desktop live you may find you run out of room. Iso disc space is set at 256mbs. If you have 2Gbs of ram or more then this might help.
The following will increase cowspace (Copy On Write) to 1Gb
sudo mount -o remount,size=1G /run/archiso/cowspace
More information at:
How To Adjust The Size Of The Root Partition On Live Arch Linux