If you want to replace Juniper with some other conifer the folks on the conifer forum could help you. I liked the height and width of the Junipers. Something similar would be nice. If you feel brave you could cover the slope with burlap and then plant ground cover plugs.

Timber when done right can last, but there are also block walls that are only slightly more depending on the block and more reliable in the long run. Hope this helps!

my apologies ==>> no need to apologize to me ... what is all the dead stuff there ,.... or did it just go summer dormant ... thinking outside the box... you could make a self play bocci court.. lol ... roll the ball up.. and it comes down ... i have a few hills in my yard.. i called it 3D bocci ... must more fun than the flat earth version ... something akin to bocci putting.. lol,.. but i digress ... i would seed in grass in fall ... and make it mowable.. asap ... or whatever might actually be there ... and then over the next decade.. if you are a hardcore gardener.. just start transforming it with shrubs.. conifer ... and gardens ... one section at a time ... to your work tolerance ... you really arent going to do this in one season .. unless you have no real budget constraints to have it professionally installed.. and all the power to you.. if you do ... are hurricane type rains [as compared to the storm itself] possible in your area of GA?? ... if so...stabilization is imperative ... as your new house is at the bottom of the hill... and that little gully in the lawn isnt going to do much for a land slide .... dont get all wound up about such.. but make sure its part of your future plans ... i wish you luck ... this MI boy isnt gong to offer any specific plant suggestions for GA ... and i wonder about some of the specific suggestions above .... take any given suggestions to a local nursery ....not bigbox.. and ask if they sell such.. if they dont.. its a good clue it might not work for you ... good luck ken

Two comments stand out. First, "it doesn't rain much here"; second, "I assume this slope has survived ok for the past 70 years". The rain issue - if you are in a region which is on the dry side now, a heavy rainstorm could cause a flash flooding issue. Second, as with infrastructure which is 70 years old, if maintenance is not performed - or an inspection by a civil engineer at the least - you could have a slope failure. It is hard to know what type of weight is above the wall or if structural changes have taken place at the properties above you which could cascade down to you. I would have a professional (engineer, not landscaper) assess the site to point out possible issues. If you rebuild any part of it, I would incorporate some type of drain/ditch/trench along the bottom of the wall to help divert possible runoff from running into your house. If you do rebuild, at least a couple of stepped terraces would seem prudent. Then, I would replant with something native that would be beneficial for the slope stability. Not knowing your region, I couldn't begin to make a suggestion. But deep roots, ability to withstand drought, lower in height, and spreading should be qualities to look for in a shrub. You can always intersperse clumps of colorful perennials for pollinators amongst low growing greenery.