Kitchen Faucet leak.. What if???

My kitchen sink is located in the slide out. The slide out is connected to the trailer main frame using a flex line but from there to the faucet, it is PEX. When the trailer was new, the hot water connection to the faucet leaked and was fixed under warranty. They first tried tightening the fitting but eventually had to replace a gasket. Disconnecting the red PEX from the faucet was easily done but due to the rigidity of the PEX and the extremely limited access access to the faucet bottom, they ended up taking the sink out to make the PEX / faucet connection without cross threading the fitting. Now the same thing has happened to the cold water connection. Tightening the fitting did no good. I am sure my arm will reach to disconnect the PEX fitting on the bottom of the faucet but putting it back on and getting it aligned before threading the fitting on is a different story. Not only is the PEX rigid but has no slack to spare. GOOD OR BAD IDEA??... connect a regular house type faucet flexible line to the faucet which should be easier to install, cut the PEX pipe back a foot or two, install a shark-bite in line stop valve and then connect the flex line to the faucet to it. Just a thought in case leaks develop in the future I would not have to secure the water to then entire trailer.. Same could be done for Hot water side.. Just wondering???