Actually the GUI wouldn’t even look so strange as there is an oxygen theme (the default KDE theme) for GNOME as well.
It’s mostly about the dialogs. (e.g. when you open or save a file)
it is not a big deal when it comes to productivity.
How can you say that?
Of course it is a big deal for users that want to have the KDE file dialogs, and it can be a big deal for productivity as well. F.e. you can create bookmarks in KDE’s file dialog to make your life easier and quickly navigate to your documents. With LO’s KDE integration you have those bookmarks in LO’s file dialog, otherwise not of course.
And it’s probably also a question of what you’re used to. If you use KDE’s file dialog all the time in all your applications, you are just faster/better/more productive when using it in LO as well.
Btw, there was a big discussion about this when the ibus maintainer suggested to drop libreoffice-kde4 altogether on the Factory mailinglist (and people demanded to keep the KDE integration).
Actually I couldn’t notice any important issues followed by LibreOffice forcing libreoffice-gnome.
If libreoffice-gnome is installed, it is enforced by ibus anyway.
But in 13.1 ibus also enforces libreoffice-gnome even when it is not installed, resulting in absolutely no desktop integration, and problems with ibus as well (i.e. it doesn’t work, at least that’s what I understand).
If that should lead to any problems, then I think using OpenOffice instead of LibreOffice would be the best work-around for peopple who have to use iBus.
Why? Just install libreoffice-gnome.
On a GNOME installation it should be installed by default anyway.
On KDE not even ibus is installed by default.
That would be another reason why the OpenOffice repo should be enabled by default, or even better, giving users the option to choose between LibreOffice and OpenOffice during the install process…
Suggest that on the Factory mailinglist and offer to maintain it…
Anyway, discussing this here won’t lead to anything anyway.
If you really want to make suggestions about changes in the distribution, you better do that on a different channel, like the factory mailinglist or even bugzilla or openfate.