@*Sebastian Here's some topology routing solutions for slots that run across curved surfaces and need to resolve to quad geometry. Support loops and shapes that cross perpendicular to the edges of the underlying curve typically won't disrupt the segment spacing in a way that could cause residual triangles or undesired…
Some UV editing tools allow you to convert the UV into mesh space, where you can edit with the full set of mesh editing tools. Using this, you could try a Push or Relax style tool, which would scale the elements away from each other. Then convert back out of mesh space into UV space again.