The mag disconnect isn't all that hard to remove if you're handy. You have to detail strip the gun and it can be a bit of a pain to get back together though. I don't have one in front of me at the moment, but I'll try to guide you from memory.
Detail strip the gun and take a look at the trigger assembly. There is a pin running through the frame that the hammer rotates on. IIRC, the mag disconnect rides on the right side if the gun is facing away from you and the pin is removed right to left. The easiest way is to carefully push the pin out with a drift that will fit all the way through so that you can leave it there and not have to reassemble everything. Push the pin out right to left, then with another drift, push the first drift out from right to left so that everything is still together. Now you can carefully remove the disconnect and do the drift shuffle again to get it all back together. Initially, I put a small washer in place of it as a spacer, but found that it bound things up a little and removed it. I'm working on about 5000 rounds since then and there is no extra wear that I can see.
Keep an eye on the safety lever, there's a spring and a small bearing inside that holds it in position and are just waiting to rocket themselves across your workbench if it comes apart. I can't fathom why Ruger thought a mag disconnect would be a safety feature, considering that you have to insert the magazine and pull the trigger to reassemble the gun after a field strip.