What? I complained to Hasbro bitterly for a variety of things, and the only thing they would send me was a Nerf Recon and a NSS Tornado Strike. (WTF, right?) I wanted to smash it with a hammer so badly... but I managed to sell it on craigslist for 15$, so it wasn't that bad. But still, I think they've blacklisted me or something. I would love to get my hands on a couple of Hydroblitz.
complete revamp of PC/output tubing layout
-milled stainless steel pump arms
-waterproof storage built into remaining deadspace
-makeshift laminator added to upper nozzle
Are you suggesting moving around the internals/disabling the Blitz function? I would be interested to see if you could have seperate triggers, the smaller PC (~130mL) for a normal nozzle (or backup mini riot blast), and the larger PC (~900mL) for the bigger nozzle? If you drilled out the bottom nozzle as is, the nozzle is (in)directly powered by the large PC and you could get as much power out of it as the tubing allows,
maybe up to 3-5X.
Actually, totally revamping the internals could result in something awesome. Only thing is, the internals are a mess. If you could get the PC directly behind the ball valve (for the trigger) you could maximize the power output from that small nozzle, but the case isn't big enough. It's a really ambitious project. Maybe even "Herculean".
Why make the arms stainless? I would just replace that mechanism with a normal pump.
Are you suggesting making the case/shell part of the reservoir? It's an interesting idea, but even the stainless parts would rust after a while.