In general I think the initial one - a drop-to-tether module - seems like a perfect WH Daytripping option. The problem with these small structures doing things is that they then have to be fueled or they are infinitely better than Raits/Athanors, as those do need fuel. The “1 in space” rule is a bit weird, as I don’t think you want to be able to lock down anyone coming into a hole by just poking your own one from time to time. I’d just go with the standard 1k exclusion zone.
In general I’d be happy with any solution that fills the small pos niche for people without being ultra-strong defensively. Depots, small structures, tether-beacons, whatever. As long as they give people deployable, attackable places to pop up, I’m sold.