We have several large shade trees in our yard. Around the trees, numerous
small thin roots are exposed. They are from pencil-thickness to a couple of
inches, and they tend to come up, lay flat over the ground (or slightly
elevated from the ground) for 5-10 inches, then go back down. This makes it
very difficult to mow the lawn (grass is growing between the roots).

Can someone tell me the feasibility of any of these ideas:

1. Removing the exposed roots. If so, how?
2. Re-sodding. Would this be terribly expensive? Would I have to do it to
the whole lawn, or just the rooty areas?
3. Giving up that part of the lawn and planting big circles of wildflowers
around the trees.
4. Anything I am missing?

Thanks in advance.
--S.