First of all, it’s one thing to tell your customers “I have a different way of doing things compared to a lot of the ‘common practices’ I have seen.”
It’s totally different to say “…Back where I come from / boy, that looks like $#!+!”
I understand you’re not liking what you have seen, however you sure have continued to kick the cow in a very ‘Carpet Bagger’ kind of way. Welcome to Texas, now show us a little bit of manners.
As for the cricket (or lack thereof) I can think of a two answers:
-House (& chimney) built before '82 or so which means IBC didn’t point to crickets for 30" or wider chimneys.
-Cricket may have been passed on since then due to budgetary concerns, or it may not have been offered.
As for the valley, provided you are using a good mil, decent width metal & run the uncut valley shingle high enough up the opposite side, you’ll be fine.
Ice & Water shield - feel free to go apples to apples on price & suck up the difference in cost. I can tell you that here in the Central Texas area, the only spots I add an Ice & Water Shield is on hip tips, ridge cap tips, gable tips & corners (usually around a 3’ x 3’ layover). I also add valley metal to the joint spanning a mobile home; gives the center a bit more grip & prevents shifting on the two halves (minor if anything, I know… but I tell myself it works).
But please - stop with the condescending remarks about Texas quality. I’m sure if I went to wherever you’re from I could find crap, substandard or ‘marginally passable’ work as well.