Multiaccount support (ideally between diff Pump.io nodes)
I really do not know if this is feasible but I think it would be nice to have a feature like this (especially when nodes are down :P).
Do you know the --config (or -c) command line parameter?
Quoting from Dianara's help window:
"You can use the --config parameter to run the program with a different configuration. This can be useful to use two or more different accounts. You can even run two instances of Dianara at the same time."
You can have several different launchers for Dianara, one with the command, say, "dianara --config pumpit", another one with the command "dianara --config mipump", another one with "dianara --config identica", etc. and have 3 completely different sets of configurations. This means each of those configurations can have different font settings, different highlight colors, different filtering rules, different window sizes... and different accounts.
The configuration name can be anything you want (no spaces), so you could use "dianara -c work" and "dianara -c personal", por instance.
I know this is not really "multiaccount" support, but for your needs, it's probably more than enough, and in some ways, it's even better.