It's certainly exciting to consider, particularly for a big Gaiseric nerd like myself, who's been dying for any new hints about his era since Falconia appeared. But since the episode landed, I've kind of sobered on the notion that the figure is Gaiseric.
Primarily, I think it'd be unlike Miura to finally give us a look at that character with little to no acknowledgement of it. As it's shown here, the figure is apparently sitting on a throne and is central to the framing of that scene, which draws attention to itself, but it really could just be
anyone. Afterall, there are tons of statues all over the place (admittedly, most of them have
heads, but that could just mean this was a statue that was in progress...). What makes it Gaiseric, necessarily? Our desire

As for why that section of the otherwise spotless city appears to be in disrepair, I have no solid explanation. Perhaps it's commonplace, and we just haven't seen enough of the city. Perhaps it's merely a reflection of how that section stood in Gaiseric's time. Counter to that, we know that when Femto waved his artistic brush across the old city,
he spruced the old designs up a bit. So if he had the opportunity, why leave that part in ruins...? Indeed, it's a good question, and one that quite possibly won't be answered.