Water drain valves hard to operate

I had to put some new washers in the bathroom faucet yesterday. I shut off the water feed (connected to cg spigot) and tried to drain some hot & cold water to relieve pressure from the system. The drain valves are a PITA to open. Was thinking of changing them out by pulling out the original drain valves and replacing them with some barbed fittings with shut offs using hose clamps as a backup to insure they don't work their way out of the drain tubes. Sound feasible? Anybody have some better ideas?