I would prefer to talk about the future of CCFC than the future of ACL, but as so many seem unwilling to let it go, how about this:
If ACL are feeling as benevolent as some on here feel they should be, then how about offering the Ricoh to Coventry RFC on a cost only basis. The 'egg chasers' are as close to the RFU Premiership as CCFC are to the FA Premiership. In contrast to CCFC, the RFC actually seem to have an ambitious board and the Premiership is their goal. Getting there will require far less investment than would getting CCFC to the Premiership, but the Butts would be totally inadequate.
So, let the rugger club play there on that basis until they reach the Premiership, which is likely to be long before SISU build a new stadium.
And for the F&B obsessives, I would guess that a rugger crowd would consume far more pints of beer than an equivalent crowd at a soccer match.