I'd say the latter paragraph is the extremely contentious one. It's not playing 3e like 3e. It's playing 3e to maximize certain of your character's potentials, one of many styles that can be used with 3e. It's not 3e itself.
If you're not all that concerned with maximum optimization, 3e works great. Works a lot like 1e.
You have an inch there and you're claiming a mile.
First, in order to turn 3e into something that is very much not like 1e the easiest way is to allow magic item shops
as recommended in 3.X. The second the Wand of Cure Light Wounds becomes readily accessible for something approaching the 750GP list price (a default 3.X assumption) the nature of clerical magic and of resting change drastically. You need to therefore either change the very nature of the 3.X gameworld to revert it to an older feel or have PCs not spend their money smartly. (Note that if there aren't magic item shops, it takes one day of downtime, and the combined resources of a 5th level wizard and a cleric to craft a wand of CLW - to keep wands from being accessible, the wizard needs to stay away from crafting feats).
The second thing you need to change is far more important because it is a class feature of the wizard from level 1.
Scribe Scroll. The Vancian tradeoff of preparing spells you will probably want or spells you might really need just goes straight out of the window unless you cut out the downtime. Almost all wizards are smart. All wizards in 3.X have Scribe Scroll. The wizard should take less time to recover than a fighter. So a wizard has the spare time to scribe the scrolls that means he doesn't need to prepare the only occasionally useful spells, thus meaning they don't have to prepare them. For a wizard to not have memorised the obscure but occasionally really useful spells in 1e is therefore understandable. In 3.X it is simply
sloppy not to have them on a scroll irrespective of world design and magic item shops. (Or you simply never give downtime which has issues all by itself).
And talking about maximum optimisation is a canard. You don't need to summon dire anthropomorphic half-illithid crocodile with your summon monster spells. Wolves, bears, and unicorns will do nicely for summons and companions. (Even if it
wasn't a strong option, a wolf would be an obvious L1 animal companion). And even low level wildshape. This is where the druid is a seriously bad class. You don't have to be trying with a druid to smash the power curve. You just need to take naively sensible options. (The wizard needs effort to be played as Tier 1, and the cleric needs to be played slightly against the fluff to start breaking things).
And then there's the diplomacy skill...
Maximum optimisation isn't the problem with 3.X. No one claims that Pun-pun is the core flaw. The problem is that simple
in character options will cause serious balance issues with 3.X. And to not take good options that are choosable in character means that you must play a player that doesn't prepare or recon that much.