a lot of old bands still putting out good shit? most of the time their creative spark is gone by that time and its just a cash grab. i cant name any old school great thrash band that put out a good album in their later career. closest i can think of is Exodus back in like 2004. i can name so many more failures and misfires.
the thrash thats OK nowadays has to borrow from black and death metal to be interesting. ive been around long enough that i remember the thrash "revival" around 2005-2011 when bands like Municipal Waste got really big. and thats over a decade old now - that stuff was derivative back then. so how derivative is today's thrash, i wonder?
best new-ish thrash oriented band i have heard is Ripper and they are certainly death metal influenced.
ive just seen and heard so much thrash metal that it really takes something special to hold my attention. its cool that you have a good local scene but since im not there i cant experience that, so i cant judge it.
here's some Ripper