Don't you used to write Bangla with MS Word ?
We have to write Bangla documents with English for personal or corporate use. And MS word do a runtime spell check, when you type Bangla, MS word indicates it as a misspeeled English word and do a red underline with every Bangla words...It's a boaring things...
And if we do a spell check we have to press 'Ignore' button a lot for Bangla words....what a waste of energy
We can avoid the problem by setting input locale to Bangla while typing.
As a programer it's a good habit if you thinking about Bangla Spell Checker though it can be done with Unicode...
It will be very nice if we found a option to setting locale to Bangla with Avro Keyboard.