My personal opinion with Titanium and clear nylon strings is basically what it says on the packet. Compared to clear nylon, Titaniums are a tad brighter (but nowhere near as bright as fluorocarbon), possibly a little bit louder, but other than that they are quite similar. Basically what you said. Then again, I've noticed that the Titaniums often sound better with larger ukes that have more inherent depth and warmness in their tone, whereas clear nylons, in my opinion, suit a much larger variety of ukes better. For example, Titaniums made my Kamaka soprano sound really tinny whereas clear nylons are completely fine on it. The opposite was true for my Kanile'a concert for which I actually prefer the Titaniums. So while clear nylons probably won't make a world of difference I think they're still worth a try, particularly since they are one of the cheaper type of string.
Side note: It's important to know that D'Addario Pro-Arte Clear Nylons for soprano ukes are made for D tuning. If you tune them to C tuning they will feel really floppy since the gauges are lower. Nothing wrong with D tuning of course, I use it on some of my ukes, but for my Kamaka soprano I'm planning on trying the D'Addario Clear Nylon concert strings for C tuning purposes since they seem to have similar gauges to some other brands of clear nylon strings meant for sopranos/C tuning.