Given that the current speed of Thargoid advance seems to be at most 500 LY/year, the only way Thargoids are going to show up in Colonia is in an Elite V [1] set in 3350 or 3400.
There's a few other things missing:
1) We don't know how far after 2.4 it will be that Colonia gets an engineer. There's certainly no sign of one showing up that soon, unless they've kept it very quiet. Colonia is ~1/300th the size of the Sol bubble, so probably won't get two engineers even if/when it gets one. I wouldn't expect the full range of options by a long way. We don't even have A-rated modules yet for most things. (We don't even have the larger B-rated ones, for that matter)
2) No Powerplay. The Colonia bubble isn't big enough for even one Power.
3) No Superpowers. (Therefore no superpower ships, ranks, etc.)
4) Limited (and somewhat odd) passenger missions because almost every tourist beacon is within 500 LY of Sol.
5) Limited systems. If you think the queue for Dervish Platform is bad now... With the whole player population of the bubble stuffed into Colonia every system would be extremely busy.
Some of those might change in the next couple of years ... others, almost certainly not.
[1] An Elite V, set 50-100 years on, in a somewhat expanded Colonia starting to be threatened by Thargoid expansion after the original bubble was wiped out some time between the two games? Perhaps with some sort of extremely limited fast-travel tech "galactic hyperdrive" to jump to other Exodus Project colonies? If Frontier ever want to do an Elite I reboot that would be an excellent excuse and in a decade or so I might buy that![]()
Points 2 and 3 of course about no (super) powers/PP are positive. The others will vary.