A few points:
Someone mentioned a POS. However, there are a number of problems with this sort of thing.
1. Highsec POS require standings. An "Evil Amarr Slaver" corporation cannot put up a Highsec POS in Minmatar space, without a whole lot of meta fiddling. An Alliance could, afaik, but that's a whole different thing. There is still the question of why someone who is held in reasonable standing by the Republic is working actively with "Evil Amarr Slaver" corporations. Iirc, alliances can also move the POS holding corporation out of the alliance when the tower enters reinforced mode, allowing it to be refuelled before a war can become active again. Shenanigans.
2. Lowsec POS are unsuitable for groups of smaller size, it would, quite rightly, attract the attention of the Electus Matari dreadnoughts.
Anchorable containers, with an Orca hanging around, and other things would be far simpler to set up and play about with, however, there is another, bigger issue.
We've talked about this before, I think, the
RP Hats problem.
To get RP-in-space things happening, a lot of things seem to require RP characters to act in such a way that places them in the most naive sector of the capsuleer populace.
Examples: The general population uses alt corporations to avoid things being easily traced to them. The exception are the naive people that haven't thought of this, or have not yet had it shown to them why alt corporations are a good idea.
The general population uses neutral transport ships to move items around.
Characters would see this sort of thing happening in the news articles, and would thus be aware of it.
A thing that is set up as a slave holding depot, would be done by most people with alt corporations and neutral transports. Instead, to get some rp-in-space going on, there's a requirement for the RP characters to disregard thing that the chars would have seen on the news, disregard any of their own experiences, and act in a foolhardy and naive fashion.
it just seems a bit weird to me, to expect RP characters to act in a way that is contrary to the way every other entity acts.