Updated versions of these OXPs (well, 'OXZs') are available via the in-game update manager.
Interstellar Tweaks I've pretty much re-written from scratch, because my coding style has become less awful and I've made some optimisations and adjustements and fixed some bugs. I've made many coding changes in the other OXPs too, but it is only in Interstellar Tweaks that you are like to see changes, in the form of (1) performance improvements, (2) some slight behavioural changes. You might want to note as well that, with this OXP, what one sees in interstellar space depends somewhat on where you start from. That is: if you want to see new scenarios, try changing the systems you are jumping between. A few bits of interstellar space - bits between certain systems - even have nicely-coloured skies.
If you discover any bugs, please report them in this thread.
PS: I'd introduced the 'Delux-o-Tank' version of the 3G ship previously, right? If not, I recommend you install the updated pack and buy one!
[EDIT:] PPS: My thanks to Norby, Smivs, Cody, phkb and another_commanded for their invaluable help.
Further edit: I meant to put this picture in, partly to emphasise that the three expansion packs at issue in this post go well together and with many other packs . .
The picture shows (er, just about) various interstellar military Fer-de-Lance 3Gs fighting a Thargoid Carrier
, in witchspace.