"GPL can only be obtained by playing Dabo"
This needs to be removed or edited. Dabo is not the only possible way to get GPL. There are several DOff assignments (besides the Dabo one) that awards GPL, Sell Prisoners to Orion Slavers (KDF Side) awards 1500GPL for a success/4000GPL for a critical success. There are other ones including exchanging Contraband for GPL (trade assignment available to both sides).
While Dabo is the most common way (Fed side at least) for getting GPL, it is definitely not the only way.