1) Thanks for the information on Ghanaian research interests.

2) Yeah, I think one can worry that them national treasures wouldn’t be totally secure. They’d get sent back to Gatekeeper City, and go into storage; and somehow the money to get them out of storage wouldn’t get appropriated, and when it was appropriated, it would get diverted. A few items, the sort that can fit in a suitcase, would go missing, and be rumored to be in a private collection in Jiddah, by way of a private auction in Zurich, but who knows? The items that did get into the museum might not be preserved perfectly–and whatever money was provided for preservation in the initial round of publicity might leach off later. The museum would close for renovations and not re-open for several decades, at which point it would only be open on alternate Thursdays, except if you provided some money to the museum guard to let you in. And occasionally the smaller items would go on tour, after the Metropolitan Museum had paid tens of millions of dollars as a payoff, before even getting to the insurance costs.

Or maybe it would work out better than all that. But I wouldn’t bet the house on it.

2) There would of course be many Ghanaian research priorities, and some might well either dovetail with or find supporting materials in documents of the slave trade (the study of precolonial polities is of continuing interest for Ghanaian as well as foreign historians). One could respond to this question by noting that Ghanaians in general see the slave trade either as an embarassment or as a not terribly relavent part of the remote past, while the Danes are collectively fascinated by and guilt-ridden about the slave trade, as it forms their historical connection to Ghana. But some contemporary Ghanaian historians, such as Akosua Perbi, have worked to show that slavery and whether one is descended from slaves is of continuing relavance in Ghanaian history and society, so it’s not a matter of these concerns being wholly separate at the academic level, simply of them reflecting different institutional interests.
There is a great deal of interest in Ghana, at both the popular and academic levels in 20th century history — the development of political institutions under colonial conditions being one popular theme — and while some of archival materials related to this have been microformed (and the Cooperative Africana Microform Project seems like a good model for the sort of institutional cooperation Tim’s been discussing), some of the originals are disintegrating (tropical heat + 1950s high acid paper = paint chips) and others lie uncatalogued waiting for some intrepid librarian/archivist-to-be to make sense of them.
To give as example of institutional cooperation that is less uneven, though one that, to my knowledge, has not included a digitization component, the Norwegian Programme for Development, Research and Education (NUFU) has funded a research partnership with the University of Ghana which has helped to fund both graduate and post-graduate research. While one might note that this program, as directed by Per Hernæs, has tended to push research along certain lines, it has, as far as I can tell, also allowed a great deal of lattitude for researchers to pursue their own visions and interests, while centrally collecting oral and archival data.

2) What would be a Ghanaian research priority?