I'm glad I'm not the only one who has had issues with RF. I admit I'm not sure whether it's better or worse since 2.4, since I didn't play that version through very far and the aliens didn't get beyond plasma pistols. At that level whether 2.4 or 2.5dev it seems still challenging at times, but not impossible. later game, as soon as the aliens start using plasma rifles, it becomes a nightmare. I've sent guys out to check to make sure the zone is clear around a cover spot, gone to cover, then had an alien move, what must have been twenty squares, walk right by about six guys, all on overwatch with a variety of weapons, walk by them, still in view (I spread the angles of my guys) turn and kill 1 to 2 of them with auto fire before anyone fights back.
It just seems rather extreme, plus whether using bullets or captured plasma weapons, the reptilian aliens (forget their name off hand; Sheeva?) seem a little over powered. They have tons of TUs, have enough armour/hps to withstand bullets or plasma damage from numerous hits (a little less from plasma, but not much), carry heavy weapons and are bright enough to flank and ambush. In reality I'm sure this is what anyone planning such invasions would go for, but in a game don't you want to balance things? Have some aliens with high move rates but limit either weapons load out or have them light on armour/hps? It just seems a heck of a leap from Tamans to these guys. That with the RF issues make some maps pure hell. Sometimes I can't get out of the Firebird and position for one or two turns before getting half my team wiped out.