The tint is part of the white balance so that's normal. The sharpening and noise reductions values you've quoted are the defaults so those are normal too. The Tone Curve and the Luminance settings in the HSL panel could affect the brightness of the image too, but...
I'm not sure what it could be considering before/after if there's nothing in the history panel. Before is the first state in the history panel (normally the import) and after is the most recent. If there's only one thing listed there the before and after states should be identical.
I've just tried putting auto tone and some other stuff on then doing imports but I only get one history state and the before and after are identical so it can't be that.
All I can think to do is reset the default to be absolutely sure (Develop module, hold alt, Reset will change to "Set Default...", click that and a window comes up, click Restore Adobe Default Settings) and then try a new import with the import preset set to none to see if the same thing happens. I don't think that will fix it but I don't really understand what LR is doing at this point.