You know just because if you get killed by the Thompson or grenades a lot, does not mean it should both be taken out completely. Here lets look at it this way. If their was going to be a DoD3 it would have elements from DoD 1.3 and source. Grenades would still be there and same with smoke, and to be honest its a good thing that the Molotov or incendiary grenade won't be added like CS:GO has, but all of that gear is useful.
Here it comes, get ready. The Thompson defense! The Thompson was the main SMG used by the Allied forces, well along with the Sten and some others, but the commonly known is the Thompson SMG. Now this might surprise a few people, but the Thompson is actually nerfed. OH NOES WHAT DID HE SAY!?!?!?! Yes the Thompson use to be way better 4 years ago. Now its a hit and miss. How do i know this? Because i have used it for the spand of 4 years AND have over 500 hours in the Assault class. I remember easily going 50 and 8 with the Thompson. Now most people i shoot survive. If you also look how the classes are setup, you would then have a hole seeing as how the SMG class is no longer there.
After reading through, it seems to me that this game would be a flop right out of the gate.
How it should be is this..
1) Reintroduce Italy forces and British forces.
2)Add the weapons from the first DoD.
3) Change the loadouts of all classes (Not going in-depth.)
4) Add classic maps that are redesigned, but are still recognizable.
5) Upgrade to the new source engine (duh, its a given)
6) No campagine, why? It does not need one, keep it similar to the outlines of CS:GO
7) Add CS:GO's competitive structure.
8) Add the pacific front? maybe, remember DOD has always been in Europe. Adding too much will thin out players and servers. Maybe the Russians will fit in more.
9) Have themed maps again, would make the game feel more historical.
10) No vehicles, no iron sights, keep it simple infantry fighting only.
11) Bring back old game modes, TDM, Search and Destroy, CTF, Classic CTF(only 2 flags, each at the others main base). No Death match. Ever. Maybe siege mode/payload.
That is all i can think of off the top of my head.
Remember each thing you remove from the game because you hate it, doesn't mean everyone else does. Think of the people, not yourselves. Game Design 101 basics. Each thing removed, can have a small or huge impact on the game. For better, or for worse.
P.S i forgot, seeing as how the game will be in the new engine, the hit reg/boxes won't be bad like they are now in DoD:s. Quick patches only work for so long. Would be nice to have the hit boxes from Halo Reach.