The only thing I use from UConnect are the apps in Via Mobile, such as Pandora. Hopefully they will keep working. But, if not, Pandora works pretty well (and starts playing a whole lot sooner) via Bluetooth. I will find out in a few weeks or more when my trial is over.
I am going to let UConnect lapse but I am still on the fence about renewing Sirius. Their 6 month special offer on their "Select" plan comes out to about $6/month (after fees) then triples in cost per month after that. $6/month may not seem like much, but I listen to only three stations. At the normal monthly rate, that will become about $6/station! Or I have to keep renewing every 6 months (and be careful it never auto-renews at the monthly rate).