I avoided sentinels because of all the bad press they received, but had a concept that originally fell to Demons/Therm MM, but after 2 years, I decided I just never liked it. So a bit ago I rolled up a DP/Fire sent, and Ive been having an absolute blast (not put intended), I planned on working RotP into his attack chain, but he's rarely used it. his range is in the mid 90s for most of his attacks, and it doesn't seem his damage is lackluster compared to anything other than a blaster.
now I'm thinking about others concepts (and after reading a few things doing some minor tweaking of this build)