There has been such a discussion before. Basically, if there are features you don't want, don't use them. Sure there are lots of features, but the way Plus 3 was designed was to make the preferences easier to use.
The people I know who use Plus have never had a problem using just the features they want. Certainly there are people who don't use all the features and just leave them alone.
If there was a "Plus Lite" version there would be too much arguement about what features should be kept and those that should be left out. Also it would mean a lot more work for Patchou. Its easier all round just to keep one version fits all