Brian, What we need is a nice (probably Chinese) electronics shop to do the job properly and produce a Mark 2 where the (already high quality) relay boards sit on top of a printed circuit board that handles all the interconnections - that is where all the tiresome work is. Better still, Meridian should produce a 271 Mk 2 with either a modified digital input that can handle MHR or, better still, an additional MHR digital-in alongside the Datasat/Storm sockets. Then the 271 could do the switching far more neatly.
Nick

Cinema/Music: Trinnov Altitude32 8-16,218,Cloud 4 channel, Marantz UD5007,DSP5200SE(2+C),DSP3300(4),DSW(2),271,MShort Ceilings,AppleTV 4K
TV: Marantz SR7013 Wharfedale Diamond 9x4+Celestion(C)
Music: Roon,i7NUC8gen,QNAP TS253A, Sony Scala, MS200, Garrard DDQ650,Wharfedale Diamond 12.3
Kitchen: AD88 (bluetooth via i80).