Some of RTÉ's branding inconsistency is mad. For example, RTÉ Online insists on using different logos for RTÉ News and RTÉ Sport to that actually used on air! They also insist on referring to the news bulletins as "One News" and "Nine News" when they have never been called that on air, they are actually "RTÉ News: One O'Clock" and "RTÉ News: Nine O'Clock" (and up until September 2003 they were "The One O'Clock News" and "the Nine O'Clock News").
They had a major project in September 2003 to remove branding inconsistencies and ensure the RTÉ name was in all of their channels (previously N2, 2FM, Lyric FM, and RnaG didn't even use the RTÉ name on air) but they haven't got rid of the inconsistencies. I'm also not sure why they would embark on a TV rebrand just after revamping RTÉ One with new presentation (well, they kept the idents but re-edited them) last month.
The actual RTÉ logo is brilliant, its a design classic and hasn't aged a bit in almost twenty years on air. Compare to the previous (1987) one which looked dated the moment it aired and was gone from all on-air material after eighteen months. It amazingly hung around as the corporate logo another seven years (possibly because they spent so much on it) but RTÉ always seemed embarrassed by it and practically never used it in any branding material.
My prediction on this one. RTÉ Two is going through one of its seven-year itches (it seems to happen once a rebrand has been on air long enough on the second channel that it seems to lose focus, hence RTE-2 became Network 2, Network 2 became N2 and N2 became RTÉ Two) and I'd imagine they will look at changing the brand again as part of a revitalisation of the channel. I don't think they'll actually go so far to remove the RTÉ brand again but they may look at the name.