Non-Compatible Templates after 3.6.0

[tEChniiQue]

I have already applied 3.6.0 from 3.5.4 and this is what I'm getting in the AdminCP. Before, there were about 50 of these, but I got rid of things that I felt positive about. Now 5 are left and I would just like some advice on what to do (revert or leave).

I only use one template on my site and it's custom, no parent template. So my biggest fear is that something will be effected negatively by changing the last few options I have left. What do you think? Can I revert these and nothing be negatively affected like my template being reverted to a default look or anything else drastic? If I choose to do nothing, what will be affected?

Yes, I did look at the list of these on vB.com but since I have some mods installed, I didn't wanna post this there since they have nothing to do with mods. So please, I've posted quite a few questions here in the past day or two and I've only gotten one response, someone please don't leave this thread out to dry, I'm just trying to learn how this works so I can contribute helping others.

Thanks in advance.