That's easily sorted as we have done in BS3 with a Desso 4 pitch, like a bowling green every week for us and the Bears. The problem is the cost (I think it was £2M) would only add to your financial dilemma.
Yes, your income will shoot up as you well know but do you spend that money on a return to the Ricoh? Do you spend that money on the team to consolidate / push on in the Championship or do you spend that money subsidising Birmingham and stay at St Andrews? Can you survive without spending it on the team?
I've no doubt your current players will be getting a hefty pay rise on promotion but your powers that be have a real problem in how best to spend that increased revenue.
FWIW, as an outsider, it seems ludicrous to have a great complex like the Ricoh lying empty most of the time and you playing in Birmingham. There must be a way for you to return which would, obviously, benefit CCFC with bigger crowds and associated incomes, plus give some benefit to whoever owns the stadium, without making it too difficult for you to go back? An example, the modernised Ashton gate is used every day, apart from Xmas day, bringing in serious money. What a waste if the Ricoh isn't doing at least the same.
Have no doubt, the Championship is a blinding division but it's really difficult nowadays. Like yourselves, we won L1 easily a few years ago but really found it hard after promotion.
It's a real dilemma and I wish you every success. Unfortunately, in the modern Championship, money generally wins.