Three cuts seemed like too much of a PITA for my lazy PITA.
Well let me tell you what I did for mine. A whole day cutting the pieces out with a Dremel. I wanted the cuts to be as small as possible to minimize the area the weld had to bridge to keep the strength high. It worked, but took forever. I blew up several packs of Dremel discs doing that. Then there's the annealing after the welding and the shot peening and the magnaflux, then the sandblasting and finally off to powdercoat. I think I made up my time doing my crossmember which is just four plates with two big holes on top which fit around the existing "gussets" the original bolts passed through and two smaller holes on bottom for each, and four lengths of heavy pipe to act as stiffening spacers between the plates on the lower holes where the bolts pass through. I got some grade 8 coated bolts, some of which had to be installed in reverse for clearance reasons. All in all the crossmember project only took me about an hour total.