First off, aren't there dozens of single features that don't work in multi? Cutscene stuff, what have you?
Yes, but not intentionally, simply due to certain limitations in the current network code. And the fact that these things don't work in multi annoys the hell out of me on a regular basis, let me tell you, so don't you dare use that fact to promote even more things that won't work in multi
Cutscene SEXPs, for example. I -need- those for a certain mission I've been planning, and they would greatly enhance others. Just this week I've had to lobotomize part of the narrative in a mission because the SEXPs I needed did not work in multi.
But getting back to the topic, if there are things which for one reason or another could be nice to have in SP, but simply shouldn't work in multi because they'd cause major problems if they did, I can't see why that should be a reason to not allow them in SP. The two don't have to be 100% identical in features, and as long as it is a measured decision rather than laziness or a limitation in the code that is behind it, I have no problem with it.
