Re: Mummies
The flakking use of mummies goes completely when you have a decent number of lesser vamps. If you want to hit SO, just go out and farm some lesser vamps from small players at 30-40% that wont do any damage to you back. Lower score value, free and are great for clearing out SGT's and prots / hools when hitting terror players. In most cases you automatically replace your losses in lessers during the attack too.
Mummies are there to give the person who wouldn't buy a punit some more flexibilty with attacking / defending options at the moment. Once you get vampires, mummies become pretty much obsolete. Indeed there should be more to them, they should add somthing more to the route - not necessarily overpower it, but just give it some more dimensionality. As it stands to attack with the route there are two units which give you offensive power in various ratios :
Slightly more gargoyles than vampires - for hitting moderately terrorist heavy players, sorcs and SA heavy players
Slightly more vampires than gargoyles - for hitting assassin heavy players, sorcs, rangers (preferably as few harriers as possible) and moderately TL heavy players
Mass gargoyles - for hitting sorcs, very SA heavy players and terror players, also useful to break deadlocks in ally wars by rushing.
Mass vampires - for hitting sorcs, very assassin heavy, TL heavy players and rangers. Can do mass SA, but it still stings a fair bit - more than it has to.
All the other units in the route are effectively defensive in nature and don't come into the game much (except for the odd few WW to clear out spike traps and lingering jeeps). All let flak you need is proved free from vamp hits (which you should carry out regularly to keep topped up). Once you start farming lesser vamps, you can drop more of the gargoyles in your setup, but I would recommend keeping them for inn targeting and middle tick let killing. In this sense, mummies are obsolete for flak. Mummies need to have a role other than simple let flak.
Both of the two new routes need work doing on them - undead is reasonably ok but sorcs need a load of tweaking. With all the other gameplay changes coming in, I fear that the issues with unit balance in these routes will never be addressed.