Rewriting Silverlight Web Resources

Now we know that:

1. Silverlight is safely still supported with Dynamics CRM 2013 (but not on Tablet/Mobile clients)
2. Silverlight 5 is supported on IE, Chrome, Firefox and Safari (Intel based Mac)

My question is:

1. Who has *concrete* plans to re-write any of their existing Silverlight Web Resources with HTML & JavaScript, and what are your key drivers that justify the cost-benefit?
2. What libraries are you planning on using (jQuery, jQuery UI, KendoUI, AngularJS, KnockoutJS, SparkleXRM etc.).
3. Are there any metrics that you are using to estimate the effort required (e.g. multiple of the initial silverlight development time)

Looking forwards to hearing from you!