My two cents:

I think the Real Tracks are great but there are a couple of problems with them that midi can help with, particularly on bass parts.

One is that sometimes keyboard and bass parts clash. Or the combination can be muddy. Changing the bass part is the easiest solution but you can't edit RT's. If I can get a good bass sound on midi, I can fix that.

The other thing is that you are going to run into some RT's that don't play pushes well. It doesn't matter how you set your preferences and song settings, or how picky you are about which RT's you use. When that happens, being able to get the bass dead on for the push gives you a reference point to get everything else right. You can do that with midi.

2b

i5-3210 laptop. Win 10 Home. 2.5ghz, 64 bit. 6gb RAM. Focusrite Scarlet 2i2.