Currently, someone doing some Tycho stuff (which is most of plugins developers nowadays) has to install m2e-tycho by themselves. Figuring out that one need to install something is not trivial, the quick-fix on pom editor help a little, but that's still an additional step to get ready.
It would be more convenient to add m2e-tycho to some Eclipse project so that it could be included in the packages targeting Eclipse development (Committers, RCP/RAP, XText...).