I LOVE! it. Only had to do 1 TMS edit on the upgrade. So far haven't found anything that it has negatively impacted (other than the conversation_list_popup_item phrase edit in the Conversation Manager add-on).
1 template edit only because I applied a fix from Jakes Nodes as Tabs that was coming into 1.1.5 when i was on 1.1.4 and felt it was worth the edit otherwise it would have been none (2 seconds) "reverting template". Job Done.
I haven't looked too much into 1.1.5 yet, but a couple of TMS edits I have became invalid after the upgrade (including my navigation icons ) and I need to figure out why. The strings to replace didn't change and yet TMS refuses to edit the templates in question. I assume it's related to the execution order of edits to the same template.