A POS requires a moon. There is an inherent maximum limit with POSs that do not exist for citadels, which can be essentially unlimitedly deployed.
It’s not about the grind, it’s about the need to. A handful of supers can RF a large tower in 5 mins flat, but a POS is stationed are nearly every moon for the purpose of removing the ability of random other entities from dropping a POS.
Around nearly all war HQ areas, a group would need to get rid a tower before they can put up their own – and that means several layers of notifications going to the group. it’s a lot easier and sneakier to take a DST in and start anchoring in space.
A few things here – There are a lot of half-finished ideas and promises for the future that CCP has given us over the…decades at this point. Vigilant, Vindicator and Bhalgorn getting their own unique models as opposted to being a reskin of a regular ship is the oldest one that I’m aware of.
CCP also has a history of half-baked ideas and implementation, from the SoE and rogue drone connection that you see from the SOE epic quest that hasn’t been addressed in a decade, the initial Potchven release (needing standing to use gates, as well as a F-U for the EDENCOM sided folks) is a recent one. A for effort, and somewhere been an F and a C- on the results, and then either marginalized to obscurity or updated to a semi-functional state sometime later is the rolling status quo so far… The communication through the forums, as well as the CSM at large has improved this…but there is still a ways to go.
What do you mean by “inexpensive”, and why are you trying to pass that off as if it were an actual conclusion?
A large POS tower by itself is cheaper than a medium structure, even now, so why are POS structures proliferation not a problem?
We really need CCP to lay out a vision of what role structures are intended to have, what balance between the M-L-XL structures look like, and only then can we have enough information to actually come to conclusions – is the intended role of structures matching up to the current emergent gameplay that may or maynot be problematic? Is the risky investment and benefit set up for each category/class of the structures? Are the choices between structures meaningful to the players? Do these X changes match up with the intent, and what potential unintended changes could we expect from those changes?
Otherwise, this ends up being a lot of begging the question, circular reasoning and other sorts of illogical nonsense.