As echoed, as a 1.2 you should just enjoy the years of mostly hassle free, good MPG driving. Relish in the NCB you'll so easily build.
Then again - your car so you can do as you please!
An induction kit will just give you a bit of noise, and only really when you're driving flat to the mat.
Yes you'll loose a tiny bit of power but you're really not going to notice on a 1.2, i hardly noticed on my 1.4. They're right though in saying you do one thing and you get the bug. Definitely with a 1.2, i'd keep it at a pristine, nice little car. Build some ncb then sell it to a new driver, they're always in demand because of the low insurance, tax and repair cost.
If you want a few ideas - there are plenty of 1.2 projects in the Clio Projects section