Delusions, by C. E. Forman
Years ago I actually had an idea that the hero of the game would have to search through a house to find some old diskettes of short games each of which would have to be played through to collect a bunch of letters, or other pieces of data (provided in the winning message), which would then form a password/secret word to find a treasure 
Everything and nothing is welcomed by the IF community.
If you take just one step outside your apartment, someone will love it, and someone will hate it.
If you buy a fish and put it on a stick, go outside, and present it triumphantly as Curt, someone will love it, and someone will hate it.
The real question is, if you want to do it.
Do you want to make an IF game within an IF game? Will it fulfill a need inside you?
…or is the need simply to be loved by everybody? …because that’s an impossible task.
The world is filled with crazy people, from top to bottom - crazy, stupid people who doesn’t deserve you going to them for their approval, but who forces you to do so with laws and rules and morals and just by being annoying and difficult in any way they can.
…but it’s not against the law to make an IF about peeing on your kid sister, or making a necklace from the ears of all the cats you’ve had.
Here’s my advice:
Go nuts.
You’ll like it.
=)
Second this (and nicely put Andreas!)
If you want to write something in IF, and it makes you happy - rock on. If you work on something with dedication and enthusiasm over time, and build something special, then you can worry less about “what the existing community wants”, because you’ll almost certainly find someone who enjoys your work.
(See: Porpentine’s writing, Kerkerkruip, Dwarf Fortress, Fallen London, etc. Or, for a less successful example - even Paul Allen Panks had his fans.)
Don’t Be Late (ALAN), from an old ifcomp
What others said. Do something that you’re excited about. Do something that you’d love to play. Your love and excitement will shine through in the final product. Trudge grudgingly through creating something because you think other people expect it and it will suck.