Most of my searches are based on searching keywords in post titles. Therefore I type 'intitle:1' quite often.
I would like to use an abbreviation instead like a single letter 'i' and cut on the keystrokes I have to type every time I do a search.
I don't think that will happen, since StackOverflow must support one letter tags like
Here's something you can do, however.
If you are using Chrome, right click on the address bar and pick Edit Search Engines. Click on Add and fill in as follows:
(Instructions are similar for Firefox.)
Now your intitle search can be done by writing, e.g., so threading in python in your address bar.
I think all qualifiers should be able to be shortcutted to the minimum required to define the operator, so for intitle: we could use int:, for inquestion:, inq:, etc.