Seems to me that it would behoove the Spreadcoin community to start brainstorming ideas for future services rather than renaming the nodes. I haven't checked in for a while so maybe some other services after instant transactions are already on the table. I'll probably jump in on testnet later tonight, but I just thought I'd leave my non-technical opinion here. If Spreadcoin can differentiate itself enough through the quality services it can provide, it's not going to matter as much what you call the nodes.
InstantX can be tested on testnet at present. Mr. Spread is working on a new build for it.