If you haven't had any issues with it, why would you consider selling it and buying something you think is more reliable when it hasn't caused you any problems? If you want a different gun just for preference that's a different story. I have a generation 1.5 and haven't really had any issues with it either. I hate the threaded charging handle that comes loose with every range trip and no amount of tightening gets that threaded charging handle to not loosen (I don't really consider that a problem per se, more of an annoyance). But it hasn't sheared off yet. The other issue that some have reported is the broken piston rod. That seems to be caused by loose gas block screws. I have tightened mine significantly and while I haven't had the piston rod break, my gas block screws were very loose so that probably mitigated a problem down the line. Also tightened my handguard screws (had to get a replacement set as I stripped a couple). KD (via Owen H) has been very good at customer support. I am not advocating for the WK...I personally love my X95 much more.
Now as for another 5.56...if it's on the market now, the C21 G4 amendment likely has it on the list...so the net effect would be the same. With the government's evergreen provision, it's going to be hard to find any model of 5.56 SA that will slip through. Personally, unless you just want something else for a change of pace, why not keep the WK180 if it has not been problematic.