Honestly, it's about time that foreign languages just ditched the accents on letters when it comes to computers. That would make computer input much simpler.
I have no idea if you actually meant that, but it's obviously never going to happen. It would be nice for practical reasons like learning new languages and international communication/text exchange, but I would be sad to see special characters go. I'd hate to see my mother tongue simplified in that way.
BTW English is the worst offender in the world in a very closely related area: English orthography is hopelessly screwed up. Read (present) and read (past) are written the same, pronouned differently, as are lead and lead and the endings of through and trough and naught and draught, while witch and which are written differently and pronounced the same etc. It's a hugely confusing and inefficient system. There were numerous attempts aimed at transitioning to a more reasonable system, but they were all pretty much dead in the water. Samuel Johnson was one of the first, and, as he wrote the first major dictionary and had huge prestice in elite circles, he achieved some limited success (his dictionary standardised English spelling as we know it). Benjamin Franklin wanted to go much further already a bit earlier: he wanted to introduce an unambiguous spelling system where each word's pronounciation can be determined based on how it's written and each sound is always written in the same way. He failed miserably, as has everyone else ever since.
So yeah, not even spelling reform is possible, let alone simplifying the language itself. Using what amounts to a pidgin writing system ("you guys just imagine your diacriticals, don't bother writing them down") is of course out of the question in all but the most limited and special circumstances. Unicode support is slowly but surely solving most of the problem anyway.