But morrowind wasn't crowded with trees it had as many mushrooms as oblivion had trees and even now some people are only getting 12 fps in oblivions forest's so imagine a jungle,all you are doing is changing the subject from rainforests to morrowind had giant mushrooms so except the truth please.
Did you play Morrowind? There were plenty of giant mushrooms, but as many as Oblivion's trees? Never mind that the majority of Vvardenfell was covered in desolate ashlands. As for people getting 12 fps...the fact that some people don't have decent computers does not mean that game companies should hold back - and I say this as someone who can't play Oblivion on PC at all.
The thing is, in Oblivion we had...dense forest, thinner forest, grasslands (with the same trees), and a half-swamp (with a lot of trees, that were all the same). In Morrowind, we had ashlands, a friggin' volcano, a proper swamp, grasslands, foothills, etc. plus the Azura's Coats and Sheogorad, which were also different. It would have helped Oblivion's case if it actually had interesting creatures in it. Virtually all of the creatures in Morrowind were either completely new, or a standard fantasy race turned on its head (the dwemer for example), and it was an utterly alien world - the animals, the environment, the people, the culture, it was all so different. Cyrodiil is the centre of a
continent spanning empire yet the Elder Council are all on holiday, the mines are all infested by vermin, there's a grand total nine churches in the game (ok, ten if you count the temple of the one, which was completely pointless outside of one part of the main quest), and we have trolls, ogres, wolves, bears and oh god its so boring and generic. We got hints here and there (Cheydinhal, Leyawiin, Bruma) of racial tension, but politics and religion were non-existent in the game - a game set where the politics and religion of an entire continent come from.
Don't get me wrong, I actually don't mind Oblivion from a gameplay perspective, and KotN and SI were certainly improvements, but frankly Bethesda was very lazy for a lot of the game (looking at the Oblivion Gates here).