It’s only older than a few Ogre Kingdoms kits, not the whole Ogre Kingdom range (although it being 2009 puts them a lot closer than they were in my head, GW really came on pretty quick with plastic kit quality). I think the HPA holds up really well for being 15 years old.
edit: I agree with Swamp Trogg, I think that Skaven wave really holds up today. I’d be happy if Clanrats stayed, I’ve already said in here somewhere how Stormvermin are probably my single favourite WHFB unit kit, the Screaming Bell is still great. That was a really good release. I still have the army book somewhere.