I don't think this would solve the problem as there have already been some hardforks which were been done for the same purposes. The  bitcoin cash and segwit both wanted to clear the issues with bitcoin but yet BTC is still working as it is. All the forked coins has turned into altcoins with BTC running the same way as it was but with more difficulties. So if at all BTC is forked again the forked coin will still be called another altcoin. There has to be a solution to solve with BTC itself and forking wont do that job. Lets see how good the LN helps BTC.