have to agree to disagree on destroyer design, my scenario is employing a contemporary boat, one used to test the high pressure steam engines, so do not think it is (TOO) farfetched (also approx. same tonnage as OTL destroyers.)
I think it is. Destroyers have a pretty distinct hull form to get maximum speed. Speed is important for a DD. The British were building 28 knot BB's and the French 30 knot. A 34 knot DD would spend 33% and 50% longer in the engagment range of a British or French BB respctively than a 36 knot DD, and would be unable to avoid contact with the mass numbers of 36 knot British DD's. German DD's are going to be stuck near the baltic or coast even in the best case scenario, so seaworthiness and range are not needed
upon reconsidering tend to agree with you, the majority of problems with destroyers could have been solved if the first 4 -6 had been operated before the next 10 -12 built. they used an improved bow and reduced the mast, funnels, etc. to compensate for being top heavy.
a better adaptation for Grille(design) would have been moderately stronger engine and planned use as minelayer (per OTL.)
if they could approach or exceed 30 kts. and carry something around 400 mines carried by Brummer (which could only make 20 kts.)