[Q] I ate a Lollipop and now now have some questions . topic

Hi all,
I had to get a replacement phone via insurance for my old S4 that got a bit wet and had screen problems. I was rooted on 4.4.2 on the old phone. I haven't been on here in a while and didn't realize there was no way to root OC1. So I took the OTA upgrade to Lollipop. But this isn't a complaint about not having root, I'll wait till there is a way of doing so. But I've noticed some IMO significant differences between JB and Lollipop, and I'm wondering if I'm missing something obvious or things have changed that much between versions.

1: Is there anyway of moving the multi-window sidebar? I hate on the left hand side of the screen and would love to move it to the right side. I've not found a way of doing that. (however I do like that more apps now are able to be in the sidebar.).

2: I want to change my Lock screen widgets. I used to have 4 on there, now it seems I can only have 2, Phone and Camera. Can I change it back to the 4 I had in JB?

3: Is there a good way of blocking Ads without having root? AdBlock Plus is supposed to be able to do this, but I'd have to add an APN, which I can't seem to do, as the Add button is greyed out (probably a result of not being rooted)

4: My phone seems to get so much hotter under Lollipop than it did under JB. Any Idea why? I've got good 4g signal so the phone isn't hunting for a signal.

Thanks