No need for new tab, just replace all the bullshit text with the rolecard. ofc it will weight slightly more, but maybe there was a little space left.
for example
Citizen
(insert rolecard here)
-setting1
-setting2
alignment:town

edit: this is wishful thinking, but IF script limit is lifted, help tab could contain more strategy and tricks you could do with all the roles (like stuff from wiki)

edit2: dont hate for calling the description "bs", maybe you made it, i apologise.
but as of now its a lot of text which could be a rolecard