Geoff Wilson is already a board member, backer, and investor in Miles Staude's Global Value Fund (ASX: GVF), based out of London which does exactly what you are describing on a global scale - mostly in the US, UK & Europe. I hold shares in GVF also. I don't think Geoff would copy Miles' business plan considering Geoff is a GVF board member (director). I think he would just concentrate on Aussie CEFs and cashbox companies trading at significant discounts to asset value.
It's worth noting that WAM Capital does not hold ANY shares that are not held in one or more of their other LICs. Everything WAM Capital holds is replicated in smaller quantities in one or more of their other LICs. Originally there was WAM, WAX and WAA and WAX was and is 100% research driven, WAA is 100% Active/Market Driven investments, and WAM Capital held holds everything that both WAA and WAX hold and was traditionally described as 50/50 Research/Market driven, although I'm sure the percentages move around a lot. It got a little less easy to understand as they added WLE and WMI. And WAM does not hold anything that WGB holds or WMA either as far as I know, but I have asked Geoff and Kate about WAM Capital and they have confirmed that as their flagship fund, WAM Capital only holds shares in companies held in the other LICs (WAX, WAA, WMI & WLE) but in larger quantities. The exception might be WLE, because it's pretty large itself, so they could hold similar or smaller positions in WAM Capital to what WAM Leaders holds, or else no stock in many of the companies that WAM Leaders holds, but WAM Capital definitely holds everything that WAM Active (WAA) and WAM Research (WAX) hold. This was very evident back when they used to list their top 20 in order of weightings for each fund. Less obvious now because they're all in alphabetical order, but you can still see the overlap there, and can usually work out which of the WAA and WAX holdings are their larger positions by which ones also make it into the WAM top 20.