I like lush vibrant mids, so are you saying that this has essentially a thin or v-shaped sound? If so then it seems something that a bit of tip-rolling or EQ'ing can fix, right?
No, I'm not saying the Titan is thin, in contrary it has quite a bit of mid bass and can sound pretty hard hitting from the mid-bass and frequencies below it. The lower treble seems a little hot too but not over the top depending on the material that you're listening to. I would say they're pretty border line level for me. Due to the emphasis of these frequencies on both ends, the balance of the sound tend to be a tad accentuated on both ends of the frequency spectrum therefore making the perceived mid frequencies a little recessed. I hope this explains my personal experience of the Titan and hopefully helps you make a sound decision too.
Deep insertion doesn't always mean better sound. It all depends on the IEM design...some sounds better with deep insertion eg. Etymotic ER4S but some sounds better with shallow insertion. Be aware that the type of tips you use may very well affect insertion depth too and so does the influence of the final sound quality. Hope this helps.