Re: should i export 8-bit uncompressed from a DV project?

If you simply export to a new format, heck no, it won't look better. But if you put your title clips into an uncompressed sequence, that's something altogether different.

Your Livetype titles could indeed look better if placed in an 8 or 10 bit uncompressed sequence. (I assume you have put a LiveType PROJECT clip on your timeline, not a .mov rendered out from LiveType.)

But let's face it, it's not always as dramatic as some of us insist. It really depends on the color content of the titles.

Theoretically, live action video originally captured in DV may look a tiny bit worse because you're starting with DV and then re-rendering it in another codec.