Here's hoping I don't just look like a troll, and there will be a good bit of seeming whining, but I have a quandry. The Deathwatch books (at least the two I own; Core Book and MotXenos) do a nice job of touting up various enemies of the Imperium; Chaos (of course), Orks, Nids, and we get stuff for the Tau and their allies, but the Eldar get no love. Now, the Eldar are probably one of my favorite races, especially in RPG (I like them the most of the aliens in table top, too), and I know that they CAN fight against even the mighty Space Marines, and triumph (just not that often ), but how might one do that in Deathwatch? Individual Eldar (that I have seen stats for), and I'm thinking of Aspect Warriors (even the Exarchs of which are probably 4000+ XP shy of average Space Marines), are built to be a challenge for Dark Heresy, the weakest of character builds of the big three (IMO), while many Space Marines fight against big critters (maybe on par, if not nastier than even a mighty Avatar of Khaine, or a Wraithlord) or hordes of hundreds of red shirts (most of the Eldar in the galaxy would comprise one horde, the way some GM's run hordes). So, how do you make Eldar a good challenge for Space Marines, when they don't use hordes well (not enough Eldar), and most of the individual Eldar given to us are only a bit better than a group of starting to mid-level Acolytes? Short of endless waves of Ranger/Pathfinder/Dark Reaper (would have to make those) sniping, one fun day of Fire Dragons' (would have to make those, too) melta-fire, a battalion of Wraithguard (better be fighting Iyanden, or be on a Maiden World), or battling a Seer Council of Serrenons (the cool Farseer from RT: Lure of the Expanse) and their Warlocks, how can I make the Space Marines dread battling Eldar? Scorpions and Banshees (have to make both of those) are good at melee, but they'll get pastified by one Space Marine, more than likely, to say nothing of a group of the Emperor's finest, before they get too much of a chance to inflict injury (even if Banshees would go first), while groups of Guardians (not much better than Guardsmen) would be laughable, and can't really horde up (again, there usually aren't that many Eldar). In the event that any GM's have used Eldar offensively in their campaigns, what suggestions are there to give them some teeth, without rewriting existing stat blocks to SM levels, thus making them squash "regular" Imperium forces, or just run away all the time, hiding behind cover, and making endless retreats?
Thanks very much for any help, and hopefully anyone else out there who likes the Eldar, as I do, will also appreciate it.