Content past GoD (current PEQ database era) is completely up to the server admins and has nothing to do with the various clients' compatibility with EQ Emu.
Any server running the current EQ Emulator SVN code (rev 1909 atm) is fully compatible with Titanium, SoD and UF. (Nothing is fully compatible with SoF IMO....)
The only known gameplay issue I have seen with UF is that bard movement songs are not being applied correctly.
That said, UF requires more work than SoD to get to that point. For SoD you only needed to get files from Titanium for the revamped zones that were no longer in the client. For UF, you need those files plus a variety pack of other files. It is playable without these other files, but you will see a lot of human models in various zones.
See:
http://www.eqemulator.net/wiki/wikka...ssingFilesList
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