By utilizing Statechains, you get to open and close channels off-chain at minimal costs. Is your channel too small? No problem. You can simply transfer your existing channel over to a larger UTXO. This can be particularly powerful considering it’s hard to know ahead of time how much capacity will be needed in a channel. Now you can cheaply experiment, and once you have a stable channel, you could choose to effortlessly move the channel over to the base layer by exiting from the Statechain.
R_1 = R1_1 + r2_1.G + b1.P
s = s1 + o1 = s2 + o2