I think voting should be open to anyone that wants to put some reasonable effort into being part of the process. For example, maybe you should have to go to your county clerk's office in person to register. Voting should be in person. Yes, for those that are home-bound or have legitimate extenuating circumstances, they should be allowed to vote or register by mail... but if you're otherwise able and not willing to go to some reasonable effort to participate, you likely aren't going to be the model of an "informed voter" either.
The only reason I think politicians and activists go down this road to making it easier to vote is because they want an electorate that doesn't think too much nor care too much. They want a docile electorate more likely to rubber stamp ideas than submit them to scrutiny. This is about undermining the functioning of democratic systems, not expanding them.... or it's just ill considered.