Yadus are toolkits, pretty good ones at that. Toolkits trade points for options and versatility. Link teams conbine several hopefully optimized Profiles to cover several areas of game mechanics at once and get Fireteam boni as well as increased Order efficiency to offset the increased risk that 8" coherency causes. Yadus arguably do what you'd normally bring several guys in a Haris or Core for on their own already. They're also unhackable assault troops with access to heavy weaponry, which isn't exactly common in Aleph. The cherry on top is they also don't die to a single Shock hit and don't care about E/M or Jammers. Problem is a single Yadu does all that, but only gets a B- for individual tasks. They're not the best gunners, even Linked Dakinis handily beat them, they're not great at AROs either. What they are is Troubleshooting:Misc and really good at it, but I'd still leave the real heavy lifting to someone else. In a Link you make a lot of their advantages disappear. They're not cost efficient if you pay for versatility on every Profile, Links already have versatility by nature and you don't get a massive boost for your kit through being in a Fireteam like for example Magisters who put Ex Imp on hold and have a bunch of hard hitting low B weaponry for cheap. On the contrary Yadu Links enhance a major problem, they're not durable at all relative to their point cost. The Rudras has a similar problem of not contributing a specialized role for a Link. The usual roles are B4 gunner, ARO gunner, close range gunner, Specialist or filler. Whatever you do these roles are the main focus. You'll happily take a DTW on your HMG or Mines on your Sniper in a Link, but you'll still take them to do one thing first and everything else second.