Good arguments Rob. I think your case is perhaps a common one among users. It surely is a time, and has been for some years, for RiscPC users to upgrade/replace their machines. If VA for both (commercial) mainstream platforms is an option, it could at least keep several users as RO users.
As to Gulli's idea about porting RO to x86, I think this has been raised quite a few times now. I tend to agree to certain benefits it poses, but perhaps the disadvantages (especially time/money involved) outweigh them. One point to consider is that the xScale is probably the most advanced and attractive ARM design available for RO machines and in this respect we depend on Intel's agenda. One could say RO is hard-coded to the ARM architecture and porting it to x86 would involve an enormous amount of time and effort, just consider what RO4-Select by itself is taking to be fully 32-bitted. However, eventually it may still be needed for RO to survive for the desktop, but that certainly depends on a lot of factors which currently do not yet seem to be relevant.