Okay I reworked this, turns out the easiest solution is just to do the majority of the channel routing in Scriptnode. I have an edge case where I am using a third stereo pair of channels which was causing me too much headache, but Scriptnode resolved it. For posterity and anyone else who ends up here you can use this to get started and modify it to suit your needs:
HiseSnippet 3003.3oc6brsaaajkx1irsRRaylfh9nPvt.oaSU3EYIqcA1HaKqFUaYqHoll7T.E4HIFSwQkjx1pEEaeLeW6S6iKP9A1Og8On6Y3PJMTlxVhx1IsUNH.dlyb4b+bl4vw0rIZXGGhsPhTMG1GKj3tnFCsb6tWWUCKgJknc33hswjlXGWgcG1W0wAqKjHwpeCcDI1bMAue9eOaWUSUKM73tDDdIwPCenQOC2w8Vq3AFllkU0wMM5wM5rEqnQr1iXRF.XypHQg9pZmn1AejJcXqfDdtpSWgD+UjplhjnX1b5JsTUaoKWHaarRtbYkTZWPLqZA0bhExIlURHQx80MbI1MbUcwNBIVaWh9vFcImYw1fWZ3XzxDSaHIz.1YV2kIl5TRj1qvdcML0qEvlbDDRfpMlosJio8PTUCciQ8Ol48Yd.ROdF7LvDqDF8VMD5IwidhbnWDnTBNTZMFJceTCMai9tigPwm6fpXARy1pfbhGUXiUHw+BsGAFfkaldpmfKaCMFMgGmUT7IokEE+x+dpTsGXo4ZPrRSrNh3hO15weYpeJ0lo94TomDT61QBitQ1DSSrcjfoJG1W1Der0fdsv1OI8oplCviFHv.ByUQSmqxKz0XzM2.IVUrLbOtO1ZZpBB9LKpDvGqfg55w++De9eCSCcrsfAvl+TzIVsdSUUp8TUiyE7PbdyEguqRIUW0fkCVYX25iscMnDRhR3SAyIl3cSTIryItj9.AtGoWehEEORb2YdyOe7FqWbHOV3hOGVIDhNpdDcX49bzQD6dplF+HVuF1VC1JvtTvYP61vX.lyeQnmgttItFwwfJkFub+2mclgta2Qc7KurXWrQmtbNDNpX+.dZE.QWCTQASeavpGPUZOafNvpEEaD3nzTt9VdLJsrIQ00vpSSCPzxnW9tj3oWAAN580E8Y0L95mh1YftAYGKUygN.qqUm.ORalTQQ4WoSwvE2abuu6cuahdkocWpToeMfaNdvAHfmXNw9neJU5zOp1Xx+Q+szOph0idBs6JV53ygND8ZANkLIm88D6Sb.+hXn+1plN3T+7BvUj44JFE+HgqTNRtxwCbiOaAwXK2ymsbnZKroG+XCj2uGR83evwH9kWTjYN3oUNOKYHdqUTKIBAzDDO7BttgfFD8AlptgijPi25CfZhw69l5i1BL8FxGO9ZK7xrhh2GUyvUqaz33JQfifitaBbzOn78P62tMVycLBtFp7qtgh.uJ29iX6ep.ivW4u4UBKzNZPuRFN8MUGtK3HEaSiUkHAPJAAieGZbXu91XvmHtIoFL9G6n1quItNfzOIcKSh1IM.WyWLVoue0coi3wZcUsrvlNwIjZxYlMIc4Ro5jATmOUUcsoQN1D3AM.m.Z387wNJOfpc32Vj1lpnz.ao603Wge7AJMhgA.kl.nLs8J9.km.nBs8p9.UB.NNbtvQX2yn9Tngh8+cvxlJF+SHJMfqX8Feo64B6PcAQcMX3q1yXJfD0qw5HwLv+DXiHfR2oGY.0OxpnrzDaapZXx3ZdqVMh4v9cIVFZTMkwVT6FHrGwWF3.InnerUCXo8x9lpUejWX60KqpARsg0ToAfuOhlhCXJfsynMxjHBxYrNJEcXYeGwvnx+ZAgocXzLceCbqyvOfn644uDxeGT4A3dVKLDLIEC1.cdaUZVJgv1OyCaAcxL9PiBqFM0qZe4RiB5wuE3HZEJB7oHPKjiRdIKsrUQxddU3GZRpaObvHPn5Ua.hfynd8ZpZ2A65s97c3mKmE1yTyIbSAljhliy5nNfHQRnFehOI874GdGluETN5EjiZoGdHnEPRUMrFQcTk1ppmOpsDzlxEVGw5ZmAtjdfGA+iJUB2VcfoKClfPHQbOlA+DhXal2fL9PiVD6C7JDwqDRDmXB41mf1GbroCmpyKECeJ5ehJHkQgr8te6WU+fJCyWWVtzADqC+g16TN6ONn9vpJ4Ovw5sMDydX8CGjud0dcec6W7xW+18K+p16XkuZFfla85mqzb3A6eZqWsam2Vd2tGaT6jRG9Mlu34jWzV4qvsyTq9t81qYkpkeckNC6rSliOb6CJmIrXfmesNpGvHMDlp8KCbT7qfoNqVhqDZaY9EtB2FQssHjt8vXtoLE+Pa5cfM0Fmoyz1tMoammp7UpVvqouJml9Fi0z2.80RhSprSa2vE2m4r8gPaXLd+HksfnjTNHR2I3yXnsPhGf1JSVYY47h4ymc6rRJhEDXdL7PylPFeMIdKNXsdJnZRwA5g3zLnINxYJkXkILjhFomz7bCDE+lOjlN.EQIQEX.EJrc1B4Ek7ulfF8HD2tfw4TP8jHuauweyShjoacHDOnSgael9cQ0wNXe73pX8g17vT.qOAdWKgMSgr2Lbmt8BCbzloLXwwhYClYpbbrSGM2YbiC6h5R8wdWTEmWRgpoNhoBIfcQDWYAPbkXxw7bJJEGGpil6BHpxt.Tb1XkTEhh0g20TzHocoT5T7fSgLWtSichCbCbqKXxIcYlbahrwZXiSwSxQCRkH.bzQMBfFaxL4rPloPkwX8VpZmLEmOS49zBsPykmnjn1scmP89dHU100jAfEI+veVWk9E8bKl3yCtYxINy5j8.s8tgF+i.NU+G2DdV1ZAry1JVF3IoVMRykgl+T9X2RKIxANWYXJ6SFYl4AKZpyCzBks9cQbmnwGaGa6NghyhpEMcEzvYFahUm3Hp2kImYPhNHOC1stndV7dbCx3tArrkh2gRNCO6oXk3BGJQddOTBrcKOTxxCkb6enjaIi4PNmVmYd5WZtqxSUUhNeo82+bXMfzS3pU.D2DRjPskInuElhAaF+e6dz3XhJxhJRxaMiWD1nKILzMgE30LVbqcIjS5o5c8vwpjs7Eq3NLfqC.gbnDXLUueWJT0B75hpdeHtMWwS+hhi.TObYUeXwfrP4lQQEk2+rf94mfGfCo2nqiSYa7OLZcd26K9biKzqPohUMNmuLuMw85SZLzRKTInV8CZgCnWp+TKbP.vqiBGbkE+gUqukU+425U+4Ar5f.BywEBY5004Bk.J5JE8Ar7OQQOQkaSTi65p.P+d+1tW3DKClTrSqb8KMCmjHI44MEmbYfNk2ZKk7YkJ.YnsMedkgid+4P7e+EQpfx1YymKG9qyMYwiVlP4uuRn7CxQ3tXckThiklxRKskVZ+gqdRaGO6SHsfOjESpvBbkuEVjhIIu.ESRdQjS4hCEmBoEj66xxIsrbRKKmzr3aI+BYokcYAkVVPoowL1fUZnryYEkFMskkT5lQp7Q42o3ufJHec9cJV33ZYZVoZoR3xc9VRGqJjWbpxd0qaz90GV6je7UuE9+qJu2dYxbpi0fmeIenhI8Nuz7cFK+4bicDK4ryaR+JYjoI8KIV.R4ea3jVKOh0uauLiPpRax14CrZQE0krGJbKb78qmJgwoHJtkTdkBRRTEwqyuM7I4OeO18OT7Gkqj+jJD+gVgmaAeSKH+IZaqqIFmuu8n4aefKz5CBdUXdOkwCIzI6454grdRS6JMs.aXaoK4gt+el0G5d+Y9gtSKap2CKgqzodOktl1vo9ndz41JJZtuES5xM95fye5ysl+g12vqPgMbUscgkmeQpiAIuCNTekML8eq8YQO86b.3OEzrvNtO0mc9TFehspNO0tK87KfVdtLmodpPOJShEIum54ze88+6UDLAr0CABfY5g95AvmrBwqMaEWL7agja7Q7z7V6l585u1r8ZAu7+bB7af2+Yn+7BrY.N1vfpFrO3BwDLk7eLY9taB5MrcTUhEInpl7phPdyc53EuYDtGIAsiqK8RP39BGpigiC4voy+mKdHb9bU6IsllCdgzb+mZgHkWeAhgtooF+oWD41spZ1k9FdWcldCuW63a7eOuWOnxDe1BnH+rEVYg9rEts+zHDtrOMhDW3SinmplM4M9uHSpUvFd8.bLK+qBsJscZoK92zhdf+z2noEdotvDki6DUh6DyF2ItUbmXt3Nw7wchae0SjFty+zqTicAgp01m8mggDiRxHwpB+ePylhjx
ScreenRecording2026-04-03at6.26.59PM-ezgif.com-video-to-gif-converter.gif