You've wittingly or unwittingly described a 'chicken and egg' scenario.
"IMO, they have had plans for RMRK all along and will use the shell in some capacity by either transferring all assets or as a subsidiary."
There are currently two considerable obstacles in the path of CRCW and RMRK:
1. Numerous class action lawsuits in various stages of filing. 2. SEC investigation/grey market trading.
To 'officially' finalize the aquisition of RMRK would expose RMRK to both obstacles. SEC/FINRA limitations/restrictions will still apply and RMRK (the asset) would be exposed to the multiple complainants of the pending litigation. 'Closing' RMRK is not in CRCW's best interest in the near future (and considerably beyond 2/20).