Hi! Thanks for the feedback.
I recently fixed weights so if you update, it should fit the same amount in a rocket as iron, apologies for that oversight.
I think you're probably right that given both superconductors and EM plants Titanium is a bit short, especially in the case when you also have to start saving LDS for rockets and can't recycle those, so I'll bump titanium plates to 2% chance in scrap recycling in the next update, to address such cases.
Here's some more explanation around the thematic choices I made:
For the electromagnetic plant the idea is that holmium from Space Age is the main metal both as a conductor and as a magnet. This largely carries over from unmodded, as steel in generally is used as a "structural" metal. I often replace it with titanium in places it where a light metal would be of benefit, such as a big spinning EM plant. As a bad conductor (and not magnetic), titanium would be a better choice than steel for the structural elements of such a building, because it would interfere less in the internal operation of the structure.
Incidentally, I also included it as a superconductor ingredient because neither holmium nor copper are very common in real life superconductors (though I think both can be used in some cases?), but Titanium is used more often in superconductors. FWIW, another of my modded metals, tin, actually replaces it when that mod is active, because even though titanium is a good choice, tin seemed a better balance for the game. When tin is active, I'll keep titanium at 1% from scrap recycling.