I have 8000FX I believe for 8 or more years already.
It paid back itself many times and provided tremendous creative potential.
I have few H9 and plug-ins.
Still, H8000 is still absolutely relevant machine and its optional remote is something addictive, although expensive.
Although I do 80% of job ITB, it is hard to exclude hardware of such calibre and it is more likely for me to buy one more than to sell mine.
Of course Eventide might ask/call current owners directly whether they are ready to support some crucial upgrade of plugin support for H8000 at certain price and if substantial number of users really need it they would accept (I would be the first to buy such option). As IT guy would expect that cost of application would be in range of 50-100.000 $, as the base of math.