That said, I agree it would be great to have a version including DrGeo ready for Sugar 0.88. At least we might get some more testing that way. And since Sugar itself is not stable yet, we could release a development version around the time - provided we don't break too much until then. We simply need to declare a certain interim Etoys version the "official" one for that Sugar release. Another option would be to follow the Sugar release cycle more closely.
For the XO 1.5 we need to have a stable version. Currently it looks like that's going to be Etoys 4 + critical fixes (that is, only SQ-565 so far). Unless OLPC slips past the Etoys 5 release, of course ;)
Shipping DrGeo into this Etoys version for XO 1.5 should not break any things. It has been used in a dedicated etoys image since several months, both for XO or PC. Of course we'd want it to be documented, but this is another story.
Hilaire