That's not a bad idea at all, but only trouble is when you want to switch back to old one, for that issue I used to have a copy of same code and comment it based on my requirements. Glad you found a way
Your idea is better and I plan to try it during the weekend. It takes a lil more time to implement it but after you can switch the coins very quick, its rite. Mine is just faster and it was the first thing which passed through my mind.
Thx