How is that different than generating with the wrong map size, unlucky landscape, wrong climate, wrong year, wrong city, industry density, and probably a few others I forgot now?
Most of those have behaviour and consequences that should be obvious when changing the setting - anyone reducing 'industry density' should be able to realise that the game will be harder. All climates are playable under normal conditions, and I would suggest a warning for 'Date < 1950'.
The effects of NewGRFs are much harder to predict, especially the many that don't have a readme. For example, how is a new user supposed to know that UKRS2's (and most other GRF trainsets') purchase and running costs are vastly higher than the default ones? Or that they need a NewGrf vehicle set when using almost any industry grf? Or that multiple industry grfs break each other...except the many ECS ones that don't?
None of these things are explained anywhere, nor can they be inferred from any information available in OpenTTD, so I would support the addition of an in-game 'NewGRF FAQ'-style page. Of course it couldn't cover things specific to individual NewGRFs, but it could at least warn new players about some common pitfalls.
P.S. - I'm not an OpenTTD noob now, and haven't been for several years now, but I do still remember my first try at NewGRFs. I added the 2cc set, thought "Why the **** do all these vehicles cost so much!?", bought a couple, and then went bust within five years...
Also, not that long ago I wrote this
wall-of-text post about NewGRFs, which is entirely not
what I'd want to see in OTTD. It's far too long and tedious.
Permanent signature filling text. Content coming soon
delayed indefinitely! Oh, and I have a screenshot thread
Linux user (XMonad
DWM/KDE, Arch), IRC obsessive and rail enthusiast. No longer buiding robots.
Author of an incredibly boring stickied post about NewGRFs