First off, when you say the PD Identity you mean Personal Evolution, yes?
“One that is focused on work compression” is a really vague description. How are you compressing the Runner’s work? As I understand it, there are different ways to give the runner more work than they can handle. In Replicating Perfection this manifests as taxing clicks (until Order & Chaos comes out, a resource that is rather inflexible). In Personal Evolution it’s not having enough cards to be able to afford checking every remote (Effects that give better draw than 1 click for 1 card are rather inflexible, such that it’s often more efficient to focus on preventing the net damage).
Okay, back on topic. Yes it is specific to what other net damage you’re running in your deck. If you’re running lots of Net already, I would suggest adding more, and exhaust the Runner’s ability to draw/prevent Net. If that’s your only source of Net, then as you said, Runners will already be playing cautiously because you’re Jinteki, and the Net is unlikely to hurt as much.
Look at your other agendas. Fetal and NAPD are both agendas that you would rather the runner steal or try and steal than you to score uncontested. So what can these agendas masquerade as? In RP the NAPD looks like a Nisei Mk.II, in PE a triple advanced Fetal looks like a Ronin, Philotic Entanglement, or Future Perfect. Similarly examine your Ambushes. If the runner has already seen an NAPD they’re less likely to bite on a double advanced Cerebral Overwriter than if they had seen a Fetal. Also what if you do have to score them to win? NAPD is easier unless you’re running Bad Publicity. How hard are are you taxing credits? In decks like the PE Cambridge run a minimal amount of ICE, and even give the Runner credits with Medical Research Fundraiser. Clearly Fetal is the better choice here, as the 2 credit tax doesn’t matter nearly as much as the 2 (+1) Net. RP however runs lots of multi-sub, at low-mid strengths, costing the Runner oodles to even play the Caprice game for a chance to steal the Agenda. Here the NAPD is either unstealable at the end of the server, or opens a scoring window when the Runner finds it in R&D.
These are the considerations I would give between the two.