I am kind of in a similar position. I have done a lot of fat biking this winter and have a 2009 Five in the garage as my main bike.
Realizing I would like to refresh the forks and have a dropper I know my old five with it’s straight steerer and 27.2 post isn’t ideal.
My quandry is to build my bits into a 2011-2013 five which fixes the immediate problem and will ride the same as the bike I still enjoy after the last nine years of riding. Much like yourself
Other option is to look at a Four that will cost considerably more but is good value at the deal I can get. (Not counting flying to the UK to get it)
Similar geometry to the five in terms of angles and length but lighter newer and shinier. Unsure of the future of 27.5 and don’t want to be caught out after only nine years on my outdated five.
Sticking with Orange as I live in the US and like to fly the Union Jack when possible.