The Etiquette of hosting someone else's addons

I’ve been delving into Makehuman recently, and I’ve found a selection of plugins that gives it way more functionality, giving you a good IK-FK rig, good facial controls, and the ability to import mocap files.

But 3 of the addons…

I guess this page is not so bad: http://www.makehumancommunity.org/wiki/Documentation:Getting_and_installing_BlenderTools 1

but once you download this file, you have to unzip it, then re-zip each of the 3 folders for the 3 addons, and THEN install them into Blender. I could just host these myself, and they could be individually zipped, ready to install.

But that would feel a little like taking the credit for someone else’s work.

I mean, I’d make it clear that these are not by me, but by the Makehuman team. (this is the credits I can find)

Any advice?

I don’t see any problem in your plan. You’d have to watch out for updates and stuff, but if you want to… Do it.
I just don’t see the necessity.

If they are gpl licensed plugins, then it is legal to redistribute them. If you are worried people will think you made the plugins, then say where they originally came from on the page with the download links.